Package Contains; 1 pcs Universal Hand Press Snap Machine, 1 set snap fastener setting dies includes 4 parts, 50 sets open ring, pearl and flat snap fasteners (50 male, 50 female, 50 pearl, 50 flat, 100 prongs) Our machine is DZN TOOLS brand new and made of aluminium. It is 1650 grams weigth. This is an universal machine and if you take proper die you can use it for setting snaps, grommets, eyelets, fabric covered buttons, rivet, jeans tak buttons etc. The top screw thread diameter is ¼ inch and 20 unch. Bottom screw thread diameter is 1/2 ‘' 11,9 mm.