15 gauge hog rings are the wire diameter specified for many automotive seating and furniture uses. Omer sources these Hog Ring tools Internationally for our customers who want a tool that has a 1-7/8" extended nose for 29/32" Rings that yield a tight curl of approximately 5/16", 27/64" in diameter. Maneuverable and well balanced, you should find this to soon be a favorite hog ring tool. Omer is there for all your fastening needs.