Included: 2 extension end pieces. By replacing the regular end pieces with these, you get 16 cm more length each. When you insert both extension end pieces, you get 32 cm more total length; 1 webbing end piece (metal clip). If you want to shorten the nylon adjustable webbing, you can use this to prevent the end from fraying; 4 slotted screws (spare parts); 1 tube of screw thread adhesive. 3g Super-Glue. Once you have set the correct length of your guitar strap, fix all the screws in the threads with a drop of this glue. This prevents the screws from loosening accidentally.