1/8 inch gypsum board and milling cutter is made of 4241 high-speed steel. This is a kind of tough, wear - steel, which is excellent in metal cutting applications, which can meet all your drilling needs. This dry drill bit has a 1/8-inch pole and drill, the overall length is about 2.35 inches, and the cut depth is about 3/4 inches. It provides you with the ideal drilling effect. Milling cutter has a cut blade, which can be carved quickly. This dry wall cutting drill can not only cut the gypsum board, but also cut wood, plastic, etc.; you will want to use this dry wall diamond , such as using socket boxes, canned lamps, etc. There are 50 gypsum board drills in the packaging to that you have enough money when doing home improvement. These gypsum board and milling cutters will allow you to use it for a long time. Colour:Silver Material:Metal Package Contents: 1set * drywall screw bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.