ITEM NAME:1/4" Impact Drive Shank Chuck Quick Connect Hex Bit Drill Adapter Description: Made of Heavy Duty Chrome Vanadium Steel. Interface has a locking mechanism, built-have magnetic, automatically up batch head. Extend all kinds of screwdriver bits, screwdriver head conversion uses Fast fastening, greatly improve work efficiency. Suitable for electric drill, screwdriver, wind batch transfer using to play the role of releasing bit holder. Specification: Material: Chrome Vanadium Steel Size: Approx 60*6.35MM/2.36x0.25 inch Package Includes: 1 Piece 1/4" Impact Drive Shank Chuck Quick Connect Adapter Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.1 Piece 1/4" Impact Drive Shank Chuck Quick Connect Adapter. Suitable for electric drill, screwdriver, wind batch transfer using to play the role of releasing bit holder. Extend all kinds of screwdriver bits, screwdriver head conversion uses.