Check the listing for details. 100Set 9mm Double Cap Rivet Leather Rivet DIY 8mm Height Stud. Condition: New. Listed at 16.46 USD. Description:Color: Bronze Tone; Rivet Diameter: 9mm / 0.35"; Base Height: 8mm / 0.31"; Suitable for (Max.): 4.5mm / 0.18" Thick; Package Included: 100 Sets x Double Cap Rivets(100pcs Caps, 100pcs Posts)Material: The double cap rivets are made of carbon steel material, durable, electroplating surface treatment, rust prevention, oxidation resistance, bright luster, and durability.Advantages: Round design, rivet outside corner round and smooth, beautiful and not easy to fall off, lightweight, small volume, can be used for a long time.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.