4 Piece Thermoplastic Expanding Stem Set with 2 Brakes

The listing is for a set of four (4) service caster series #05 casters, two (2) swivel 1-1/4” x 2-11/16" expanding stem with side lock brake casters, and two (2) swivel casters, with 2” diameter thermoplastic rubber wheels. Supports up to 80 lbs per caster.