Installs in seconds to quad rail forends or Picatinny accessory rails Capable of 360degree free rotation Fits 1.25inch slings Heavy duty desig QD Quick Detach Sling Swivel for Picatinny Rail amp; 1.25inch Sling Push button style quick detach sling swivel comes with rail mounted base for Picatinny rails Simply push button to detach and attach swivel Swivel pin rotates freely after plugged into base For use with 1.25inch wide slings Great for use on Quad Rail forends or other Picatinny accessory rails. Heavy duty alloy construction. Swivel is made of steel and base made of aluminum alloy with steel insert and steel clamping bolt Installs in seconds. Allen wrench included Base length: 1inch Weight: 2.5 oz.(70g)