Tandy Leather 3/8" Solid Brass Chicago Screws 1291-01
You are looking at one brand new ten pack package of Tandy Leathercraft 3/8" (9.5 mm) Brass Chicago Screws.  This item 1291-01 has a threaded post that allows you to open and reattach pieces whenever needed.  These screws work great for straps, cases etc.  Thank you for looking.