PHYHOO 80Pcs Fine Abrasive Wheel Brush for Dremel&foredom Rotary Tools 2.35mm Set of 80 Pcs of Mounted Cotton Buffs, Polishing Tool, Fit Rotay Tools Grinder Mounted Cotton Buffs Polishing Wheel for Dremel Rotay Tools Please kindly note this before place the order: the diameter of shank is 2.35mm.(Please forgive 0.05 mm errors on the measurements) The polishing wheels are belong to the consumables These are great for polishing jewelry or other metal working uses.they can be used with a dremel tool,fit for rotay tools grinder