Check the listing for details. Medium 5/16" 8mm Screw Back Button Stud & Screw Wristband Silver USBind 5 SETS. Condition: New. Listed at 14.95 USD. Medium Button Head Stud & ScreweBay Store: USBindUse for a distinct look, quick, efficient, & durable clamping / joining of two materials. Wristbands, belts, items with flaps, etc...This listing is for 5 Chicago Screws and 5 button head studs.(Other sizes available, see store.)Screw Shank Length: 5/16” (8mm)Button Measurements: Height 13/32” (10.3mm), Head 5/16" (8mm) Finish: Nickel Plated, machined from Solid BrassThread Size: #8Genuinely Made in California, USA Multiple shipping speeds available.$AVE ON SHIPPING!Discounts on shipping when you shop our store, add items to cart and checkout at once!Free shipping on orders over $40.00! Applies to U.S. shipments only.We ship Worldwide!Contact us for discounted pricing on quantities of 50 or more. Visit our store for more finishes and sizes. If a size or quantity you seek is not listed or have questions, comments, concerns or requests, please contact us.Thanks for looking!