Check the listing for details. wet polisher grinder stone concrete core drill bit granite marble floor buffer. Condition: New. Listed at 59.99 USD. FREE SHIP (United States) Remind: The velcro pad holder and core drill bit arbor is 5/8"-11 female thread. NOT M14. This auction/package carries (a)-(d): (a) 1 Piece of 4" Diamond Segmented Cutting Blade (Ultra high segment. segment height is 9 mm),inner hole diameter of the blade is 7/8" to 5/8". (b) 18 Pieces of 4" / 100mm Diameter Diamond wet dry (wet use recommended) Polishing Pad for granite marble concrete.4 X Grit 50 100,3 X Grit 200 400,1 X Grit 800 1500 3000 6000.- 3.2mm thickness- recommend 2500 - 5000 rpm (grinder or polisher speed must be lower than 5000 RPM).- wet or dry use And (c) 1 Piece of 1 3/8" / 35mm Diameter (Ultra High Segment: 9mm High) Diamond Core Drill Bit for concrete granite quartz (with 5/8"-11 female thread arbor).And(d) 1 Piece of (5/8"-11 female Thread arbor) 5" Velcro Backer/Pad Holder.Important Remind: Velcro backer's max capacity is 5000RPM.Please don't use it with high speed grinder / polisher.