12" x 3" Thermoplastic Round Gray Tread Swivel Caster

This  12" x 3" Thermoplastic Round Gray Tread Swivel Caster consists of pressed steel, with ball bearings in the swivel head, ball protection by the special top plate and ball disc design. The special dynamic riveting process of the swivel head results in the slightest swivel head play and serene rolling nature with an expanded service life managed by the solidification of the ball race grooves. This caster includes rich-quality thermoplastic polyurethane, low-noise operation, low rolling and swivelling resistance, proper floor conservation, and very high chafing resistance. In addition it is chemically bonded for an indivisible linkage to the wheel center.