Screwpop – Utility Knife 2.0. Model SPT007. Measures 3 1/8″ x 13/16″ x 3/16″. Stainless construction with brass eyelet and Neodymium magnet blade catch. Fits standard utility blades (2 or 4 notched) and allows up to four controlled depths of cuts. Lever system along with magnet serves as a blade stop and catch. Holds one blade only. Attaches to keyrings and carabiner clips. Hang packaged. Screwpop products may not be sold on Amazon, eBay or any other website not owned by the dealer.