Mini Quick Change Retractable Utility Knife, Perfectly Sized For Pocket, Pack, Or Key Ring, Change Blades Quickly & Easily With One Touch Push Button Release, Store Up To Four Blades In The Spring Loaded Magazine, Keep Twine, Fishing Line, & Thread From Slipping With String Cutter Notch That Ensures Safe, Accurate Cuts, For Sure Handling & Precise Control, The Smoothly Contoured Body With Soft Rubber Grips Is Shaped To Fit Your Fingertips.