Swifty wheels and cylinders provide a smooth, scratch-free satin finish. No other rubberized abrasive can accomplish this in one step. The 442-637 and 442-647 wheels are a little harder than the others listed but provide the same finish. All wheels are ¹⁄₈" thick. Cylinders have ¹⁄₁₆" dia. holes in one end for threading onto tapered Miniature Point Mandrels (items 140-293, 140-295, and 214-310). see related products below for recommended miniature mandrels. White colored abrasives are slightly harder but provide the same finish as gray. Sold in packages of 20. Made in Italy.