Diamond Core Thin Wall Wet Drill Bit Hole Saw for Concrete Cobblestone (36*370MM 1.4inch)

Features: This drill bit has standard M22 thread which is suitable for most water drilling machines on the market. Made of 45# seamless steel tube, the tube body is not easy to deform during drilling. The cutting teeth of specially designed shape has great performance. The connector is in hexagonal shape, convenient to use. Widely used for drilling on reinforced concrete and other materials, such as air conditioning drilling, pipes, road signs, stair handrails, street lighting installation, heating transformation, bridges, airports, viaduct drainage holes. Specification: Material: 45# seamless steel tube Length: 370mm 14.6inch Type( Optional ) Bottom Outer Diameter Bottom Inner Diameter Top Outer Diameter Top Inner Diameter 30*370 30MM(1.18inch) 22MM(0.9inch) 30MM(1.18inch) 22MM(0.9inch) 32*370(G3 4 pipe) 32MM(1.3inch) 23MM(0.9inch) 30MM(1.18inch) 22MM(0.9inch) 36*370 36MM(1.4inch) 27.7MM(1inch) 32.86MM(1.3inch) 22(0.9inch) 38*370(big G3 4 pipe) 38MM(1.5inch) 30MM(1.2inch) 32MM(1.25inch) 22MM(0.9inch) 40*370(G1 pipe) 40MM(1.57inch) 22MM(0.9inch) 36MM (1.4inch) 23MM(0.9inch) Package list: 1 * Wet Drill Bit