This package carries (a)-(e): (a) 1 Piece of V50 (2" / 50 MM) diamond Full Shape bullnose router bit for 50 MM High or Thick stone concrete (5/8"-11 Thread arbor). (b) 1 set of Lock ring nut and wrench (for 5/8"-11 Threda spindle grinder or polisher). (c) 1 Piece of 5" Pad Holder (its arbor is 5/8"-11 Thread). Important Remind: Pad Holder's max capacity / velocity is 5000 RPM. Please do not use it with high speed grinder or polisher. (d) 8 Pieces of 5" Diamond polishing pad for stone concrete travertine: 1 X Grit 50 100 200 400 800 1500 3000 6000. (e) 1 X 5" / 125 mm Diamond Tuck Point Blade (segment thickness 1/4") removal of mortar joints in brick, block or stone of exterior building surfaces, interior floors and walls, giving you the freedom to repair and resurface almost any type of concrete and masonry.