Important Remind:The router bit and pad holder’s arbor is 5/8″-11 female thread.NOT M14 Thread.This package carries (a)-(f):(a) 1 Piece of B20 (20mm / 3/4″ Radius / Demi / Half Bullnose) Router Bit/Profile for 20MM (3/4″) Thick or High stone concrete travertine to do Demi shape bullnose (5/8″-11 Female Thread arbor). (b) 1 Piece of 4-1/2″ Diamond super thin mesh rim saw blade for stone granite marble ceramic porcelain cutting (non-threaded. inner hole diameter is 7/8″-5/8″).(c) One set of 4″ Diamond wet dry (dry use recommended) polishing pad for stone granite marble concrete travertine polishng:1 Piece of Step 1, step 2, step 3, step 4 and step 5.. And 1 Piece of 4″ aluminum Backer/Pad Holder (5/8″-11 Female Thread arbor).(d) One piece of 1-3/8″ (35mm diameter diamond core drill bit for granite stone marble porcelain ceramic concrete hole cutting (5/8″-11 Female Thread arbor).(e) One piece of 1-3/8″ (35mm diameter) Diamond grinding milling drum for stone concrete travertine granite marble sink hole inner edge polishing / shaping / enlarging. (5/8″-11 Female Thread arbor). (f) 1 Piece of (0mm) to 1-3/8″ (35mm Diameter) Diamond Trimming Chamfer Bit. With 5/8″-11 Female Thread arbor. It is a versatile milling bit designed to enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, Granite and Marble.and it’s also suitable to easily create round side indentation necessary to accomodate pipes or electric wire lines. Diamond beveling chamfer bit can bevelorchamfercrated rough holeson glass,granite, marble, stones,ceramic and porcelain tiles. This is a save money tool because with just one standard core bit and this finger bit you are able to create many different hole sizes, without needing to buy several different core bits. It is manufactured with top quality raw materials and high end production processes to grant outstanding performances. It can bring a smooth,beautiful hole finish.