STANDOUT FEATURES ✓ 800 LB. CAPACITY. ✓ PNEUMATIC CASTERS TRANSPORT MATERIALS SMOOTHLY OVER ANY SURFACE. ✓ HARDWARE INCLUDED FOR EASY AND QUICK INSTALLATION. DOES YOUR GLOBAL INDUSTRIAL BULK BOX TRUCK NEED A TRUSTY SET OF WHEELS WITH THESE CASTERS YOU'LL BE READY TO ROLL OUT YOUR SUPPLIES AND MATERIALS IN NO TIME. THIS 6"" PNEUMATIC CASTER KIT INCLUDES 2 SWIVEL AND 2 RIGID CASTERS EACH ENGINEERED TO BE SHOCK-ABSORBENT AS WELL AS TO WATER OILS GREASE SOLVENTS AND MANY OTHER CHEMICALS. THE REPLACEMENT SET INCLUDES 2 SWIVEL AND 2 RIGID CASTERS. MADE FOR MODELS 800310 800311 800312 AND 800313 AND THEIR RED GRAY YELLOW AND WHITE COLORED VARIANTS.