SHDIATOOL Dry Diamond Drill Core Bits 4pcs / Set Diameter 25/50/65/75mm Vacuum Brazed Hole Saw M14 Thread for Tile Porcelain Granite Marble

Quantity: 4 pieces; Diameter: 25mm+50mm+65mm+75mm; Diamond Height: 10mm; Total length: 60mm; Connection: M14 thread Designed for dry drilling in porcelain stoneware, ceramics, natural stone tiles, marble, granite, tiles, hard floor tiles and so on. Wet using can prolong its life High-quality and temperature-resistant diamonds ensure professionally clean and fast drilling. Vacuum brazing is the most effective and precise way of making diamond tools. It makes the industrial diamond grains permanently brazed to the edge of steel core, creating an unbreakable and extremely heat resistant segments Drill bits for angle grinders with universal M14 mount. For the use of all common angle grinders.Recommend 6000 RPM,Max 11000 RPM (Notice: if you want to fit the drill bits on the drill or other machine, you need an adapter, such as SDS Plus , Hex, Round Shank) 【Vacuum Brazed Diamond Technology】More Heavy Duty and Wear Resistant than electroplated diamond bit,provide very high efficiency,cuts faster,durable and sturdy