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 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 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