FOCSTOL Diamond Core Drill Bit Set - 12pcs (6/6/8/20/25/35/50/75/100mm+20mm Finger Milling Bit+50mm Beveling Chamfer Bit+SDS) Diamond Hole Saw Kit for

FOCSTOL Diamond Core Drill Bit Set - 12pcs (6/6/8/20/25/35/50/75/100mm+20mm Finger Milling Bit+50mm Beveling Chamfer Bit+SDS) Diamond Hole Saw Kit for

【Package Include】Total 12pcs/set: 9pcs core drill bits 1/4''(6mm), 5/16''(8mm), 4/5''(20mm), 1''(25mm), 1-3/8''(35mm), 2''(50mm), 3''(75mm), 4''(100mm); 1pc 4/5''(20mm) finger milling bit; 1pc 2''(50mm) beveling chamfer bit; 1pc sds adapter 【Application】Suitable for dry/wet drilling Porcelain Ceramic Tile Marble Granite, etc. Diamond core drill bits for drilling holes. Beveling chamfer bit and finger milling bit for shape, enlarge and round bevel existing holes. SDS adapter could change the connection of diamond bits 【High-quality Diamond & Vacuum Brazed】High-quality base steel, high-quality diamond provides to improve the efficiency of hole drilling. Vacuum brazed technology provides higher processing efficiency and longer working life. Dry or Wet use. Wet using will prolong the working life and get better drilling effect 【EVA Mold Positioner】Built-in sponge pad can effectively fix the drilling position of the hole saw, assist in positioning (drilling a small slot can remove the sponge pad), making the drilling more accurate. Carrying strap on the outside of Oxford bag, easy to carry 【Recommended Machine】5/8''-11 Thread Angle Grinder. Less than 100mm: Recommended speed 6000RPM, maximum speed 11000RPM. 100mm and above: Recommended speed 3000RPM, maximum speed 6000RPM. If you want to use electric drill or other machine, you can use sds adapter in the package