The Bumper, 5-8" Black Rubber, PK10 is a set of 10 black rubber bumpers that are 5-8 inches in diameter. They are made of durable rubber and can absorb shock and prevent damage from impacts. The bumpers have a hollow center and can be installed onto screws or bolts as cushions. They are useful in applications like machine feet, dock bumpers, furniture legs, conveyors, and more. The bumpers are sold in a pack of 10 by Grainger, a leading supplier of industrial parts and equipment.