Welcome to EB-TOOLS-PRO Buy from EB-TOOLS-PRO and you will receive fast free shipping and 24/7 technical support. I have been selling on eBay since 2008 with a 100% positive feedback so you can buy with confidence when you buy from EB-TOOLS-PRO. Pro-400 Self-Piercing Rivets- Box of 400 includes 5.3mm x 4.0mm, 5.3mm x 5.0mm, 5.3mm x 6.0mm, 5.3mm x 8.0mm, 100Pcs of each The Pro -400 rivets are made of high quality zinc coated steel. The rivets will work with the following self piercing rivet guns: SPR-12, ACL-36061, Pro Spot PR5, GYS-8T, Dent Fix DF-SPR67, Dent Fix DF-SPR70, Cebora CEB CMO, Chief PNP90, Car o Liner rivet gun and many more not listed Note: It is Recommended to check with your OEM, and OE vendor to verify requirements for each application. Each manufacturer has different requirements for sizes, location, and number of rivets required. Always follow I-Car and OEM Procedures.