Have the bits you need on hand for your most intricate gunsmithing projects with the Wheeler Micro Multi-Driver Tool Pen. Its convenient shape fits comfortably in your hand and is equipped to hold 5 of your most used bits. The aluminum handle keeps the bits internally and can be changed quickly, by simply pulling the bit out of the exposed end and pushing it through the top of the handle. This tool also comes with a bits holder to conveniently store up to 12 unused bits. Throw this tool in your range bag and use its precise bits for adjusting your lasergrips or even maintaining your chronograph. Complete With 17 Interchangeable Driver Attachments