RWM Casters Co. is the originator of the Kingpinless caster, the most emulated caster in the industry. RWM’s unique design adds more mass at key points. This, in addition to more thorough heat treatment, provides additional strength that combats core material brinelling. Superior strength means superior performance and RWM’s patented swivel section provides the strength to build longer swivel leads that function flawlessly, even at high speeds, without shimmy. Being the original isn’t easy. RWM has dedicated countless hours of research, development, testing, and improvement to ensure the highest quality products our competitors can’t match.