ITEM NAME:3x Magnetic Screwdriver Extension Release 1/4 Hex Shank Holder AU Bit Drill C1A8 Features: *Magnetic screwdriver extension quick release 1/4†hex shank holder *Fit for 1/4†shank drill bits *Include 3 kinds of holder length: 60mm, 100mm, 150mm *Easy to use and operate *Made of high quality material, durable to use *100% Brand New and High Quality Specifications: *Material: Stainless Steel + Chrome Vanadium Steel *Main Color: Black (As Pictures Show) *Shank: 1/4†hex shank (6.35mm) *Holder Length: 60mm/2.4 inches, 100mm/3.9 inches, 150mm/5.9 inches (Approx.) *Quantity: 3pcs Package Contents: 3pcs Hex Shank Quick Release Holders Thank you for your purchase Problems? You can follow below process to chontact us. There is a time zone difference,but we will do our best to quickly response to your questions:.Magnetic screwdriver extension quick release 1/4†hex shank holder. Shank: 1/4†hex shank (6.35mm). 3pcs Hex Shank Quick Release Holders. Fit for 1/4†shank drill bits. Include 3 kinds of holder length: 60mm, 100mm, 150mm.