Gunmetal, 17mm Copper Dome top snap Fastener Snap Buttons Poppers Press Stud Button Snap Pliers for Sewing Leather Craft Clothing. 14 Pieces per lot i63 : Amazon.co.uk: Home & Kitchen
Button and loop fastener set (large)
10mm ,15mm 19mm 21mm 30mm Metal Snap Fastener Spring Press Studs Button Sew on | eBay
Metal Press Stud Snap Button Popper Fastener for Leather Clothes Jacket Repair | eBay