Our 4 Inch Diamond Polishing pad thickness is 3.2 mm. Pad can be wet or dry use (wet use recommended). Ideal speed of grinder or polisher is between 2800 and 5000 RPM.
DO NOT use high speed grinder or polisher (6000 7500 11000 RPM grinder is NOT appropriate). This item is in the category "Business & Industrial\Building Materials & Supplies\Other Building Materials".
The seller is "tool4stone" and is located in this country: US. This item can be shipped worldwide.