Safety CastersContemporary design, strength and performance make these replacement casters an excellent choice for office and home furnishings. With appropriate stems and fasteners, each caster can be used on wood, metal and tubular metal chairs, furniture and other equipment. All casters carry the manufacturer's guarantee against defects in material and workmanship. Rolls when you're seated, brake keeps chair from rolling when you stand. Ideal for hard surfaces and low pile carpeting where runaway chairs are a problem. Caster/Glide/Wheel: Dual 2" Full Hood Casters; Color: Matte Black; Stem Type: B.