The arbor of pad holder is 5/8-11 Female Thread. Pad holder’s max velocity / capacity is 5000 RPM. Please do not use it with high speed grinder or polisher. This package carries (a)-(b). (a) 1 Piece of 5″ / 125 MM (5/8″-11 Thread) polishing pad holder. 15 Pieces of 5 Inch / 125 MM diamond polishing pad for stone concrete granite marble travertine. 3 X Grit 50 100. 1 X Grit 800. 1 Piece of 5 Inch Diamond Glaze Buffer (it brings mirror like polished result to natural granite marble). (b) Hard Foam Backed Hand Pad With Interchangeable Electroplated Diamond on Flexible Cloth. 1 Ergonomic Hand-shaped Foam Backing Pad. 9 Pieces of Interchangeable Working Layers. 1 Piece of Grit 60 100 200 400 800 1500 3000 Diamond on Flexible. For Hand grinding and polishing with water on granite.