Bumpers are commonly used in the design of foodservice equipment. A bumper is a mechanical device used to absorb or soften an impact, or protect against collision. Bumpers are often made of rubber or a soft plastic and can be found in or used with ice bins, sliding refrigerator, freezer, and merchandiser doors, ice cream cabinets, holding and serving cabinets and carts, and more. A screw is a type of fastener, in some ways similar to a bolt typically made of metal, and characterized by a helical ridge, known as a male thread external thread. Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pullout. A screw drive is a system used to turn a screw. At a minimum, it is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Other examples include Phillips head screws and screwdrivers, and Allen hex screws and wrenches. Specifications. Material Rubber. Height 0.5 in.. Width 0.75 in.. Length 0.55 in.