Features: Each metal cone stud measures approx. 7 x 10 mm/ 0.28 x 0.39 inch in size, which are portable and light, easy to carry. You can put them in a box when they are not in use, without taking up too much space, convenient to store. You can send these metal spikes and studs to your father, relatives or neighbors as useful gifts, to show your love and kindness. A nice gift can bring them a lot of convenience, and provide them with a pleasant use experience. Specifications: Material: zinc alloy Color: as the picture shown Size: approx. 7 x 10 mm/ 0.28 x 0.39 inch Quantity: 100 sets Package includes: 100 x Punk rivets with screws Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays. Pointed and small parts included, please keep away from little kids.