2-1/2" x 1-1/4" Poly-Pro Threaded Swivel Stem Caster, Exp. Adapter,250# Cap

2-1/2" x 1-1/4" Poly-Pro Wheel w/ Expandable Stem Adapter The poly-pro wheel is one of our caster staples, providing plenty of durability with a firm tread. The polyurethane tread protects surfaces, and the annular bearings roll very smoothly. These casters work best for indoor applications; for outdoor use, please take a look at our Polymadic wheel casters with UV-resistant materials. Tread: Polyurethane, Non-Marking, Mechanically Locked To Core Core: Polyolefin  Bearing: Annular Bearing Rig: Zinc-Plated Swivel Caster With Swivel Dust Cap, Expandable Adapter Capacity: 250 Lbs. Color: Maroon  Durometer: Shore D 60 (+/-5) Temperature Range: -20° F to 180° F Load Capacity 250 Lbs.  Wheel Diameter 2-1/2" Tread Width 1-1/4" Tread Type Polyurethane, Non-Marking, Mechanically Locked To Core  Core Type Polyolefin Bearing Type Annular Bearing Wheel Color Maroon Overall Height 3-1/2" Swivel Radius 2-9/16" Adapter Sizes - 3/4" Tube Inner Diameter (0.720" - 0.851")- 7/8" Tube Inner Diameter (0.852" - 0.927")- 1" Tube Inner Diameter (0.928" - 1.029")- 1-1/8" Tube Inner Diameter (1.030" - 1.140")- 1-3/8" Tube Inner Diameter (1.360" - 1.425")- 1-1/2" Tube Inner Diameter (1.426" - 1.589")- 1-7/8" Tube Inner Diameter (1.790" - 1.850") Durometer Shore D 60 (+/-5) Temperature Range -20° F to 180° F