PEPPERLONELY Brand 4PC Rose Flower Resin Chunky Snap Button Adjustable Chunky Ring Making Set Quantity: 4PC 1 ring and 3 flower snap buttons Size: Ring: about 19mm inner diameter 19mm wide; Half Hole: 6mm Fit Snap Buttons in 5~6mm Knob Buttons: about 20mm in diameter 11mm thick knob: 5.5mm. Just put the ready snap button to iron ring shank's hole a stylish chunk ring will be finished.