Manufacturer: Checkers, Manufacturer Part Number: FS8-T-G~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with Green Triangle Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8-T-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with Orange Triangle Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8-T-Y~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with Yellow Triangle Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8-Y~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with 12" x 11" Yellow Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8L-16-O3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. 8 ft Whip with 16" W x 16" H Heavy Duty Orange Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8L-NF3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Wide variety of lighting options. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. 8 ft Whip, No Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-16-G~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with 16" x 16" Reflective X Green Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-16-O3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. Hitch mount available. 8 ft Whip with 16" x 16" Reflective X Orange Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-G~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with 12" x 11" Reflective X Green Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with 12" x 11" Reflective X Orange Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-Y~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~Hitch mount available. ~8 ft Whip with 12" x 11" Reflective X Yellow Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8XL-16-G3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Wide variety of lighting options. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. 8 ft Whip with 16" x 16" Reflective X Green Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8XL-16-O3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Wide variety of lighting options. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. 8 ft Whip with 16" x 16" Reflective X Orange Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8XL-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Wide variety of lighting options. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~8 ft Whip with 16" x 16" Reflective X Orange Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8XL-QD-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Wide variety of lighting options. ~Choose from heavy duty orange, green or yellow flag. ~Whip constructed from premium fiberglass resin. ~Quick Disconnect Base has stainless steel components, 8 ft Quick Disconnect Whip with 12" x 11" Reflective X Orange Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8XY-QD-16-Y3, 5, 6, 8, 10, or 12 foot lengths available. Mounting base included. Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. Whip constructed from premium fiberglass resin. Hitch mount available. 8 ft Whip with 12" x 11" Reflective X Yellow Flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8L-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Mounting base included. ~Wide variety of lighting options. ~Orange, green or yellow heavy duty Day Bright fluorescent nylon mesh flag with or without X. ~Whip constructed from premium fiberglass resin. ~8 ft Whip with 12" W x 11" H Heavy Duty Orange Flag with Amber light.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-QD-O~3, 5, 6, 8, 10, or 12 foot lengths available. ~Quickly attach or detach from vehicle. ~Choose from heavy duty orange, green or yellow flag. ~See additional accessories. ~Quick Disconnect Base has stainless steel components. ~8 ft Quick Disconnect Non-Lighted Whip with 12" W x 11" H Reflective X Heavy Duty Orange flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-QD-Y3, 5, 6, 8, 10, or 12 foot lengths available. Quickly attach or detach from vehicle. Choose from heavy duty orange, green or yellow flag. See additional accessories. Quick Disconnect Base has stainless steel components. 8 ft Quick Disconnect Non-Lighted Whip with 12" W x 11" H Reflective X Heavy Duty Yellow flag.

Manufacturer: Checkers, Manufacturer Part Number: FS8X-SPQD-YEach Heavy Duty Split Pole Flagstaff 8' White Rod Without Lamp Socket And Quick Disconnect Rod Base 12"" X 11"" Yellow Flag With Reflexite X

Manufacturer: Checkers, Manufacturer Part Number: MC4011 The Checkers MC4011 Ultra-Class Mining Wheel Chock represents the pinnacle of safety innovation for the mining industry. This heavy-duty wheel chock is designed specifically for ultra-class mining vehicles, offering superior safety and durability for the largest haul trucks in the mining industry with a capacity to secure vehicles weighing up to 1,600,000 lbs (800 tons). As the lightest ultra-class mining chock available*, the MC4011 is 23% lighter than our previous version, weighing 27 lbs , which makes it significantly easier to lift and install on bumper mounts while meeting NIOSH guidelines for one-person lift above the shoulder. The ergonomic design features an external handle that's easier to reach and grip with gloves, along with an optimized center of gravity for easier carrying and installing. With dimensions of 17.5" x 14.5" x 16", the MC4011 is 7.5 inches shorter than other products on the market, further enhancing maneuverability. It has been rigorously tested on 10% uphill and downhill grades for maximum hold and is designed to meet specific wheel geometry, ensuring positive holding power for the heaviest mining trucks. Constructed from tough HDPE, this wheel chock is resistant to many oils, fuels, solvents, tears, abrasions, and extreme weather conditions. It meets OSHA and MSHA specifications, making it the only chock suitable for safe single-person placement and removal in ultra-class mining operations. Whether for open pit mines, quarries, or large-scale mining operations, the MC4011 addresses critical industry pain points including labor shortages, costly replacements due to corrosive environments, and worker injury risks. Checkers’ MC4011  helps mining operations improve efficiency and ROI while prioritizing worker safety, making it the smart choice for mining operations worldwide. Replacement handle and bracket are available separately. The MC4011 is also available in a non-bracket version - MC4011-NB - for vehicles that already include chock mounting equipment. Product Summary At 27 lbs, the lightest weight of any ultra-class mining chock on the market (as of February 2025) Ergonomic with easy grip handle and center of gravity Compact dimensions of 17.5" L x 14.5" W x 16" H - 7.5" shorter than competing products on the market Rated for vehicles with gross operating weight up to 1,600,000 lbs (800 tons) and tire sizes up to 165 inches in diameter The only ultra-class chock suitable for safe single-person placement and removal (as of February 2025)

Manufacturer: Checkers, Manufacturer Part Number: UC14HM~Rugged construction. ~Durable zinc-plated finish. ~Mounting hardware is NOT included. ~11.85 in X 10.25 in. X 4.75 in., Weight: 2.75 lb. (1.2 kg).

Manufacturer: Checkers, Manufacturer Part Number: UC15HM~Rugged construction. ~Durable zinc-plated finish. ~Mounting hardware is NOT included. ~12 in X 11.5 in. X 4.75 in., Weight: 2.75 lb. (1.2 kg).

Manufacturer: Checkers, Manufacturer Part Number: FS7012~Mounting hardware included.