Efficient Fixing Tools: 4 fixing tools are included to make the installation more and efficient; the punching tool helps to holes on the product, and then hammer and push the snaps on both sides Base Tool: The on side of the base is the fixing cap of the snap button and prevents the cup-shaped cap, and the convex surface on the other side of the base is the rivet that fixes the snap button and prevents the rivet from bending and sliding Size: The diameter of the bottle cap is approximately 12.5 mm / 0.49 inches, each set includes 2 caps, 1 and 1 slot Attention: These leather rivets are small objects, please keep away from children to avoid accidental ingestion Clip Kit: Comes with 100 sets of 4 colors ( gold, silver, bronze and black) clip, 4 fixing tools, enough to meet your and meet your different needs Wide Range of Applications: These leather snaps can be used for or making clothes, such as shirts, jackets, work clothes, backpacks, shoes, hats, belts, cotton clothes, jeans, leather