The B25 (1 / 25 MM Radius Bullnose router bit) is used with the wet polisher directly (for 25 MM High or Thick stone concrete edge bullnose grinding), NOT using with the planetary polisher plate. This package carries (a)-(d). Many other sellers DO NOT attach the lock ring. (b) 45 Pieces of 4 (3.2 MM Thickness) Diamond Polishing Pad for stone granite marble concrete terrazzo. Pad thickness is 3.2 mm. 9 X Grit 50 100 200 400. 3 X Grit 800 1500 3000. And 3 Pieces of 4 Diamond (velcro backed) Turbo Grinding cup wheel for stone concrete travertine surface coarse grinding. And 3 pieces of 4 Professional Grade Glaze Buffing Pad. (they bring stone granite marble mirror like polished result). 3.3 MM Thickness Buffer. And 3 Pieces X 4 Aluminum backer/Pad Holder. (c) 1 Pieces of B25 (1 Radius Bullnose) router bit for. 25 MM Thick or High stone concrete to do edge bullnose grinding. (d) 1 Pieces of Triad Planetary Plate (work with this polisher). This Planetary machine combines proven planetary. The Triad Planetary Polisher is a. Rugged, planetary powered tool designed to produce a flat. Swirl free finish on counter tops, floors, walls and steps. Unit will grind, hone, polish and clean concrete, terrazzo. Marble and granite surfaces using diamond abrasives. A true planetary gear driven tool.