1. Made of high quality carbide tipped metal material, very durable 2. Greatly replace the broken adapter with your drill chuck 3. Simple operation, easy to use, and fast perforated 4. Used for drilling walls, , bricks,or installation of air-conditioning etc 5. High-frequency welding technology, welding openings is very strong, inside and outside welding mouth Connecting Rod Length:. 200mm Diameter:. 65mm colour:Silver grey Material:45 # steel Package Contents: 1 * 1 * Connecting rod 1 * Drill bit 1 * Wrench Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.