Foredom A-CFB3 Flannel (Canton) Buff, 3". 3" Flannel Buff, shellac center hole, 30 ply, 2 rows of stitching. For final polishing with compound. Flannel Canton Cotton Buffs are made with thicker, softer fabric. They are excellent for final polishing with rouge on precious metals (especially good on high karat gold and silver). Center pin holes are reinforced with shellac (S) for a tight fit on tapered mandrels. Made in USA.Use 3" and larger buffs on tapered spindle of M.BL Lathe at 5,000 RPM Max Speed.