Material: Metal (steel and iron)Length: 7.5 - 8.5cmApplications: This is For punch hole and install Rivet ButtonPacking included: 9pcs Total per setNote: Due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you! Package include:New 9 pcs Snap Fastener Installation Kit Leather Hole Punch Buttons Set Tool Kit x 1 Packaging DetailsUnit Type:setPackage Weight:0.320kg (0.71lb.)Package Size:34cm x 26cm x 10cm (13.39in x 10.24in x 3.94in)