Anti-Scratch Feltac Dual-Wheel Friction Grip Casters with Fused Felt, Set of 4 Dimensions: 1 3/4"D x 4 1/2"W x 4 1/2"H Weight Capacity: 75 lbs. Each Provides Ultimate Protection for Linoleum, Ceramic, Laminate, and Hardwood Floors. Ideal for Office Chairs Felt Caster Rolls Silently and Smoothly