Features:_x005F_x000D_1. Made of high quality carbide tipped metal material, very durable_x005F_x000D_2. Greatly replace the broken adapter with your drill chuck_x005F_x000D_3. Simple operation, easy to use, and fast perforated_x005F_x000D__x005F_x000D_4. Used for drilling walls, stones, bricks,or installation of air-conditioning etc _x005F_x000D_5. High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth _x005F_x000D__x005F_x000D_Specifications:_x005F_x000D_Material: carbide tipped metal_x005F_x000D_Connecting Rod Length: approx. 200mm_x005F_x000D_Hole saw Diameter: approx. 65mm_x005F_x000D_Color: As the picture show_x005F_x000D_Quantity: 1set_x005F_x000D__x005F_x000D_Note: _x005F_x000D_1. Please allow 1-3mm errors due to manual measurement_x005F_x000D_2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same_x005F_x000D__x005F_x000D_Package Includes:_x005F_x000D_1 x Hole saw_x005F_x000D_1 x Connecting rod_x005F_x000D_1 x Drill bit_x005F_x000D_1 x Wrench 1Made of high quality carbide tipped metal material, very durable 2Greatly replace the broken adapter with your drill chuck 3Simple operation, easy to use, and fast perforated 4Used for drilling walls, stones, bricks,or installation of air-conditioning etc 5High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth