ROBERTS 3-In-1 Carpet, Vinyl and Utility Knife is the premier knife among installers due to its versatility. Expertly designed, this knife accommodates carpet, utility, trimmer, hook or concave blades with a quick blade change. With a blade change, it can be used to install carpet, LVT/LVP - or as a utility knife to cut twine and cardboard. It features a patented insert with 3-positioning options according to the blade type and cutting use. Position 1-sets the metal insert for use with a carpet blade. Flipping the metal insert allows it to be used with a utility blade. Position 2 is used for LVT/LVP applications, and Position 3 is for use as a utility knife. The molded comfort grip and pinky hold increase leverage and pulling power. This knife features in-handle blade storage to hold 10-packs of blades for added convenience.