Features 1、Simple Drilling: Supports both wet and dry use, the diamond hole saw ensures easier drilling, hole expanding, chamfering, cutting and more. 2、Extensive Using: Allows for wide application on a variety of materials, including but not limited ceramic tiles, granite, marble, bricks, etc. 3、Smart M14 Shank: Designed to have standard M14 shank, the hole saw drill bit has good stability in high speed, compatible with angle grinder. 4、Great Materials: Combining premium diamond and C45 steel, the hole opener drill bit has sturdy structure, and very durable for long term use. 5、Easy to Install: Light in weight and compact in size as well, the convenient installation can be quickly completed within several minutes. Specification Item Type: Diamond Hole Saw Material: C45 Steel Drill Handle: M14 Hole Diameter: Approx. 20mm / 0.79in, 25mm / 0.98in, 35mm / 1.38in, 50mm / 1.97in, 75mm / 2.95in, 100mm / 3.94in. Applicable Machine: Angle Grinder Package List 6 x Diamond Hole Saw 1 x Storage Box