Brand new 25 piece set of Stainless Steel Studs & 3/8" Long Eyelets. These studs and eyelets make up the bottom half of the the snap assembly, male portion of the snap. Simply place the eyelet through the fabric you want to install them into and place the stud on top. You will need a snap setting tool to set these properly. Let us know if you need a tool to set these. Questions? Send us an e-mail here on Amazon. We respond to all e-mails within 24 hours and often much sooner. Northwest Tarp & Canvas