80/120/140mm 1/4 inch Screwdriver Batch Head Extension Rod Hex Shank Quick Release Magnetic Bit Holder Drive Guide Drill Bit Feature:1. (1/4 inch hexagon) 6.35mm international or, suitable for most impact drivers, drill bits and electric screwdrivers, etc.2. There is a magnet in the inner hole of the drill bit, which can attract the magnetic head, fix the screws and bolts in the proper position, and it is not easy to fall.3. Easy to install, large bearing, stable operation and no jamming.4. The portable size does not take up space and is convenient for you to carry. Specification:Material: Alloy steelSize Before Telescopic After Telescopic Joint Diameter Shank Diameter80mm 80mm 120mm 6.35mm 11mm120mm 100mm 200mm 6.35mm 11mm140mm 120mm 250mm 6.35mm 11mmNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 x Batch Head Extension Rod