A variety of materials can be installed, such as leather, paper, fabric, etc. Double Cap Rivets / Leather Rivets; Top Cap Diameter: 8 mm; Post Length: 8, 10, 12 mm (all post length on 8 mm cap); Quantity Material: The double cap rivets are made of carbon steel material, durable, electroplating surface treatment, rust prevention, oxidation resistance, bright luster, and durability. Leather Hardware: Rivets : 7 Steps Carbon Steel Rivets Set CRAFTMEMORE 200 Pack Leather Rivets Single Cap Rapid Rivet Metal Stud Fasteners Round Cap For Bag Belt Wallet Leather Craft (Silver, 6MM 8mm Double Cap Rivets Application: Leather rivets are usually used to repair and DIY decorate your items such as belts, bags, totes, handbags, purses, crafts, etc. Double Cap Rivets, stud rivets, leather repair, Small 7x7, Medium 8x8 or Large 8x13mm, antique brass, nickle, copper, black Better if you have professional leather binding tools. Easy installation: Punch a hole in the items requiring leather rivet with a punch hole tool, then place the rivet foot up on the base, push it into the hole, and place the rivet cap, the mounting punch is vertically aligned with the rivet cap and can be fixed by beating the mounting punch with a hammer.