Fir for:1/4" shank dirver bit Note: Due to lighting effects 's brightness contrast settings etc there could be some slight differences in the color tone of the pictures and the actual item. Total length:60mm/2.4", 100mm/3.9", 150mm/5.9" Brand: / Please allow 1-2mm differs due to manual measurement, thanks. Shank size:1/4"/6.3mm Extend all kinds of screwdriver bits,screwdriver head conversion uses.Fast fastening,greatly improve work efficiency. Type:Hex Shank Quick Release Holder Features: 1/4 Hex and high quality.Hard steel holder for maximum durability, the heavy-duty construction allows for long service life. Interface has a locking mechanism,built-have ,automatically up batch head Material:CR-V steel Colour:Black For use in hand-held drivers or power drills, this 1/4 inch female by 1/4 inch male bit holder Very helpful to or tighten a large number of screws after you've started or loosened them. 1x 3x Screwdriver Extension Bit Quick Release Holder 1/4 Hex Shank Tool Suitable for drill,screwdriver,batch head and other to transfer.has a hardened and tempered steel shaft with a quick-release chuck. MPN: Does not apply Brand: / Note: Due To Lighting Effects 's Brightness Contrast Settings Etc There Could Be Some Slight Differences In The Color Tone Of The Pictures And The Actual Item. 1x 3x Screwdriver Extension Bit Quick Release Holder 1/4 Hex Shank Tool Extend All Kinds Of Screwdriver Bits,screwdriver Head Conversion Uses.Fast Fastening,greatly Improve Work Efficiency. MPN: Does Not Apply