[ Material] Spikes and studs made of zinc alloy, screws made of iron. Each spike is smooth with a good finish, and with no casting Lines, fine Workmanship and . [Size] Spike height:9.5mm (3/8inch), spike base diameter:7mm (9/32inch), height of screw:6mm (15/64inch) [Package Contains] 100pcs silver tree spikes with screws and 2pcs installation tools to meet your needs for leather craft DIY project. Easy Installation even you're a new hand. [Easy to Use] with 2pcs install tools. These are pretty and you love them! Just need punch a hole and screw on. They definitely look cool with your DIY project. Wonderful products that you can't missing. [Wide Applications] Amazing idea for decorating , purses, shoes, belts, jacket, jeans, wristbands, hats, dog collars, garments, clothing, necklaces and more leather craft DIY making. Colour:Silver Material:alloy Size:7x10mm Package Contents: 100 * silver tree spikes with screws 1 * random screwdriver(Random, no designation be accepted, and use not be affected) 1 * hole punch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.