With a GT(TM) Sling Swivel in hand, you&';ll immediately recognize its quality. Close tolerance machining assures a snug, solid fit with a minimum of noise.1" Loop & Black Oxide Matte Finish A flush mounting system No protruding swivel studs Fore end and butt stockswivel bases are countersunk into stock, and glued intoplace Easily installed Fast operating for users whoremove slings often