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& 39;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& 39;t Missing.Wide Application ---- Ideas for Decorating , , Belts, Jacket, Dog , Garments, Clothing and more leather craft DIY making.colour: silverMaterial: Metal Contents:32 x Tree Size: 8 x 12 MM ( 5/16 x 15/32inch )16 x Tree Size: 6.5 x 20 MM ( 1/4 x 25/32inch)8 x Tree Size: 10 x 20 MM ( 3/8 x 25/32inch)8 x Tree Size: 10 x 24 MM ( 3/8 x 15/16inch)6 x Tree Size: 10 x 27 MM ( 3/8 x 1 5/64inch)70 x Screw Height:15/64inch1 x Hole Punch1 x Screwdriver1 x Clear Storage BoxOnly 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.",