Diamond Core Drill Bit 1-3/8 Inch - FOCSTOL 2pcs 35mm Diamond Hole Saw with Triangle Shank for Porcelain Ceramic Tile Marble Granite - F2-B45035405L02

• 【Size】Diameter 1-3/8''(35mm). total length 65mm. diamond height 10mm. diamond grit #40/45. triangle shank. handle diameter 10mm 【Application】Suitable for dry drilling in Porcelain Ceramic Tile Marble Granite Artificial Stone Quartz, etc. Triangular shank design for stable clamping, smooth and easy drilling 【Sawteeth Cutter Head Design】There are several chip removal grooves between the teeth, which can quickly discharge dust in drilling and are not easy to be clogged, which improves the sharpness and drilling speed 【High performance】High-quality steel, vacuum brazing technology and high-quality diamonds, which are tightly arranged and highly exposed, provide faster and sharper drilling with a long service life 【Recommended Machine】Corded Drill, Cordless Drill, Benchtop Drill. Use electric hand drill: Recommended speed not less than 2000RPM. Faster the RPM, longer the drill bit's working life. When use Angle Grinder, please install angle grinder drill chuck