Features: High quality material, durable in use. Strong and light material, easy to store short drill posts, convenient when going out or working. 1/4"" bit holder keychain can be convenient for daily use and work need. Quick release bit holder on tool bag to change bits with one hand, quick and easy. The keychain extension rod with small size and easy to carry around, suitable for the transfer of various drill bits, screwdrivers, etc. It can also be used as a keychain. Screwdriver bits holder has the function of one-key installation and quick release. Operation 1: Push the color rings part forward. At this time, the bead in the unlocked state, and the batch heads can be freely inserted and pulled out. Operation 2: After inserting the bit, loosen the color rings, the color rings will spring back, the bead locked at this time, and the drill bit can be fixed and stable. Package Includes: Package A: 1x Bits Holder Package B: 1x Bits Holder Package C: 1x Bits Holder Package D: 1x Bits Holder Package E: 1x Bits Holder Package F: 5x Bits Holder Specifications: Material: Plastics Size: Approx. 64x25x44mm/ 2.52x0.98x 1.73in(Single Connector) Color: Purple/Black/Orange/Red/Green/5Pcs note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.