Available in Maple and Oak. Top quality bearings provide a full 360 degree rotation - smoothly and easily. Bearings have an electro-zinc coating. Feature clipped rear corner for more turning flexibility and felt pads on bottom of base to protect furniture and add stability. Large: 31 x 17; Medium: 25 x 17; 21 x 14; Utility: 11 x 11. Only available unfinished.