【Size】 Approximately 10cm in length 3, 4, 5, 6, 7, 8, 9, 10mm 【Quantity】 8 pieces This product is a leather rivet setting tool for eyelets, snap fasteners, and jumper snaps, with a foot-crushing range of 3mm-10mm. It's a convenient tool for attaching small eyelets when doing leathercraft. The back of the eyelet splits and expands like a chrysanthemum flower, securing it in place. Simply place the rivet setting tool vertically on the leather and tap with a hammer. This is a classic hole-making method recommended for beginners.