cosmopolitan 1/4 in. bit holder with a flying release chuck for flying and uncomplicated bit changes, with a 1/4 '' well-grooved shank you can use it on any power drill/driver that accepts 1/4 '' in. hex drive, and now you can use a one-person holder for any 1/4 '' hex screwdriver bit in your toolbox, no matter it is stark or well-grooved shank, it all can be securely held by this holder. . Simply the collar up to insert the screwdriver bit and whorl it in place, sliding the collar hinder automatically ejects the bit, allowing uncomplicated and fleet removal for your bits. for driving screws in a citywide variety of demanding applications including deck building, framing, installing plywood subfloor, and more. Technical : Total Length : 2.5 In. -LRB- 65 mm -RRB- Insert : 25 mm : 1/4 in. : Plain or Grooved 1/4 in. screwdriver. attractive force Package : 1x Gold - Bit Holder 1x dispirited - Bit Holder 1x Red - Bit Holder These holders are not appropriate for multiple interface bits and does n't hold the screws .