Durable---- Spikes and Studs Made of Zinc Alloy, Screws Made of Iron. Each Spike is Smooth with a Fine Finish, and with no Casting Lines,Fine Workmanship and Durable. Sizes and Colors ---- Assorted 5 Different Sizes Tree Spikes, 350 Sets Different Designs and Sizes Screwback Studs Along with 10pcs Tools to Meet Your Needs for Different Leathercraft DIY Project.Easy Installation Even You're a Hand. Easy to Use ---- Coming with Install Tools. These are Pretty Sharp and You Will Love Them! Just Need Punch a Hole and Screw on.They Will Definitely Look Cool with Your DIY Project. Wonderful Products That You Can't Missing. Wide Application ---- Amazing Ideas for Decorating Your Bags, Shoes, Belts, Jacket, Dog Collar, Garments, Clothing and more leather craft DIY making. colour: silver Material: Metal Package Contents: 160 x Tree Spike Size: 8 x 12 MM ( 5/16 x 15/32inch ) 80 x Tree Spike Size: 6.5 x 20 MM ( 1/4 x 25/32inch) 40 x Tree Spike Size: 10 x 20 MM ( 3/8 x 25/32inch) 40 x Tree Spike Size: 10 x 24 MM ( 3/8 x 15/16inch) 30 x Tree Spike Size: 10 x 27 MM ( 3/8 x 1 5/64inch) 350 x Screw Height:15/64inch 5 x Hole Punch 5 x Screwdriver 5 x Clear Storage Box 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.