1-1/2" (40mm) Source II Carpet Wheel Caster with 5/16 Grip Neck Stem

1-1/2" (40mm) Souce II Twin Wheel Caster with 5/16" Grip Neck Stem - Part# 8TW4002BK (Best for Carpet) This furniture casters is from our economy line. They feature a nylon body & nylon wheels. The nylon wheels works best on carpet, but will work on all floor surfaces. For floors that need to be protected, such as hardwood or marble, please select a furniture caster marked with "floor protective" in either the title or description. Matching adapters and inserts for this mounting stem can be found here - Adapters & Inserts Specifications: Load Capacity (lbs.): 40 Tread Material: Nylon Wheel Diameter: 40mm Rig Color / Material: Flat Black -Nylon Body Overall Height: 2" Swivel Radius: 1-11/16" Fastner: 5/16" x 1-1/2" Long Grip Neck (Wood Neck) Stem Weight (Lbs): 0.15