1 Piece Pull The Dot Snap Set, Stud Eyelet Only. Brass with Black Oxide Finish Locking snap assures a firm grip that will remain secure through years of use. Superior snap action and holding strength. Length on the Post is 1/4" if you need the longer 3/8" Posts please let us know when you order Widely used throughout the Law Enforcement, Aviation Maritime industries for the extreme holding power of the snap under arduous conditions If you are nearby we can install these fastener's for you, or you can take them to a local boat canvas shop to have them installed These fastener's require a special die for setting properly; Yes, it is possible to use a Phillips Screwdriver to set the snap but not recommended. Complete flattening of the post on the Cap Eyelet are necessary to ensure proper placement. Also available in Nickel Plated Brass Finish We Ship Internationally! Northwest Tarp Canvas Take a Look Our Quality Tarps! Have a Nice Day!