Feature: 1. Reliable Material: Bit tooth is made from a mixture of premium cobalt powder and diamond, which has excellent molding, concentrated and stable powder particle size distribution, low oxygen content and strong bending strength. 2. Fast Punching: Due to the high hardness and strong flexural strength, the punching speed of the bit tooth is quite fast. It takes 2 to 4 minutes for ordinary concrete to punch, and about 6 minutes for concrete with higher labels. Save you unnecessary waste of time. 3. Best Cutting: You can add different drill teeth and drill holes with different diameters for different use scenarios to achieve the best cutting effect. 4. Cyclic Utilization: If there is a professional drill bit at home, this drill bit tooth will be your necessity. The drill tooth is damaged due to long term use. You can just replace the drill tooth to realize the recycling of the drill bit. 5. Widely Used: Drill tooth can be applied to water pipes, hot water pipes,air conditioning pipes and bathroom pipes, sewage pipes, fire pipes, drainage pipes and so on. Specification: Item Type: Drill Bit Tooth Material: Cobalt powder and diamond Size Outer Arc: Approx.21mm / 0.83in Inner Arc: Approx.16mm / 0.63in Thickness: Approx.4mm / 0.16in Height: Approx.8.5mm / 0.33in. Package List: 1 x Drill Bit Tooth