Durable- - Spikes and Studs Made of Alloy, Screws Made of Iron. Each is Smooth with a Fine Finish, and with no Casting Lines,Fine Workmanship and Durable. Sizes and Colors - - 5 Different Sizes Tree Spikes, 70 Sets Different and Sizes Screwback Studs Along with 2pcs to Your Needs for Different Leathercraft DIY Project.Easy Installation Even You're a New Hand. Easy to Use - - Coming with Install . These are Pretty Sharp and You Will Love ! Just Need Punch a Hole and Screw on.They Will Definitely Look Cool with Your DIY Project. You Can't Missing. Wide Application - - Ideas for Decorating , , Belts, Jacket, Dog , Garments, Clothing and more leather craft DIY making. colour: silver Material: Metal Contents: 32 x Tree Size: 8 x 12 MM ( 5 or 16 x 15 or 32inch ) 16 x Tree Size: 6.5 x 20 MM ( 1 or 4 x 25 or 32inch) 8 x Tree Size: 10 x 20 MM ( 3 or 8 x 25 or 32inch) 8 x Tree Size: 10 x 24 MM ( 3 or 8 x 15 or 16inch) 6 x Tree Size: 10 x 27 MM ( 3 or 8 x 1 5 or 64inch) 70 x Screw Height:15 or 64inch 1 x Hole Punch 1 x Screwdriver 1 x Clear Storage Box Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.