DIY Leather Keychain Making Kits, BlackSize: Cowhide Keychain Making Findings Kits: 18 sets; rectangle: 40x25x1.8mm, hole: 2.5mm, 1pc; oval: 65x15x1.8mm, hole: 2.5mm, 1pc; rivet: 7x6mm, pin: 2.7mm, 1pc; rivet: 6x3mm, hole: 2.5mm, 1pc. Iron Split Key Ring: 30x3mm, inner diameter: 26mm, 18pcs.