Pull The Dot Socket Stud Only, Black Oxide - Select The Amount You Need These are the portion of the snap that comprise the locking effect of the Pull the Dot Snap and can be utilized with other 3/8" Line 24 Snap assembly's. 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 Brass Finish We Ship Internationally! Northwest Tarp Canvas Have a Nice Day!