The half-inch thick Merard STV cotton buff is made of a glaze percale material. This one is a 4-inch diameter buff. We recommend this one for the second step of fine watchcase polishing in conjunction with Oras. You can use this one with Luxor white for brass and copper alloys.  You can use it with Luxor yellow for gold and steel and Luxor orange for precious metals. It's even so versatile that you can use it with Avavor. Check out the STV and all the Merard buffs on Stuller.com today.