The Milwaukee® 48-22-1903 Fastback ™ Flip Utility Knife with blade holder is designed to improve user productivity. It will be used by a mix of business professionals and DIY users. One-handed opening Press and Flip provides quick access to the blade. The built-in magnetic blade storage contains four additional blades to improve user performance. The toolless blade change allows the user to insert a new blade quickly and easily. The built-in hook allows the user to make a cut without opening the tool whileLength - 6.75 -17cm"