BK Resources 4SBR-3RA-PLY Swivel Caster 1-1/2" Expanding Stem 4" Polyolefin Wheel

BK Resources, 4SBR-3RA-PLY, Swivel Caster, 1-1/2" expanding stem, 4" polyolefin wheel, 300 lb. capacity, fits 1-1/2"W OD tubing, resistant to acids and caustics, double ball bearing, operational temp range -45ºF to 180ºF, zinc plated steeld steel