[DETAIL] Product information Features: The diagonal diameter of the hexagonal handle is 1/4 inch or 6.35mm, and the inner hexagon is magnetic with a locking mechanism at the interface; Suitable for connecting handheld drills/electric drills/wind drills, etc; Transfer and extend various screwdriver bits/taps/drills, etc; Quick fastening to improve work efficiency; This extension rod can only accommodate single headed screwdriver heads, not double headed screwdriver heads!!! Specification:(Please refer to the details page below for specifications and dimensions) Package included: 60mm black quick change connecting rod * 1 Notes: 1. Manual measuring, please allow 1 ~ 3mm error,thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture. [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Model Number: Black quick change connecting rod - Hign-concerned Chemical: None - Origin: Mainland China - Model Number: Black quick change connecting rod - Brand Name: Mr Drill - DIY Supplies: Woodworking - Material: Carbon Steel - Surface treatment: electrophoresis