Photo 1 of HOLKIE Caster Wheels 3 inch Locking Stem Casters, 5/16" -18 x 1-1/2" (Stem Diameter 5/16", Stem Length 1-1/2") Threaded Stem Casters Swivel Casters Set of 4 Heavy Duty Castors Gray

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Photo 1 of HOLKIE Caster Wheels 3 inch Locking Stem Casters, 5/16" -18 x 1-1/2" (Stem Diameter 5/16", Stem Length 1-1/2") Threaded Stem Casters Swivel Casters Set of 4 Heavy Duty Castors GrayPhoto 2 of HOLKIE Caster Wheels 3 inch Locking Stem Casters, 5/16" -18 x 1-1/2" (Stem Diameter 5/16", Stem Length 1-1/2") Threaded Stem Casters Swivel Casters Set of 4 Heavy Duty Castors Gray