Concrete Hole Saw Firm M22 Thread Core Drill Bit Hexagonal Shape For Air Conditioning Drilling For Pipes For Stair Handrails For Road Signs

Concrete Hole Saw Firm M22 Thread Core Drill Bit Hexagonal Shape for Air Conditioning Drilling for Pipes for Stair Handrails for Road Signs Specification: 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 bridges airports viaduct drainage holes. Specification: Material: 45# seamless steel tube Length: 370mm/14.6inch TypeOptional Bottom Outer Diameter Bottom Inner Diameter Top Outer Diameter Top Inner Diameter 30x370 30MM1.18inch 22MM0.9inch 30MM1.18inch 22MM0.9inch 32x370G3/4 pipe 32MM1.3inch 23MM0.9inch 30MM1.18inch 22MM0.9inch 36x370 36MM1.4inch 27.7MM1inch 32.86MM1.3inch 220.9inch 38x370big G3/4 pipe 38MM1.5inch 30MM1.2inch 32MM1.25inch 22MM0.9inch 40x370G1 pipe 40MM1.57inch 22MM0.9inch 36MM 1.4inch 23MM0.9inch Package list: 1 x Wet Drill Bit