The Sling Stud Post replaces the Sling Stud on your Rifle and allows you to attach the rifle to a Clamp Lock on your backpack. It is quick and easy to use and makes hiking and glassing far more enjoyable. -Choosing your Sling Stud Post-If you are attaching your rifle to a Tripod, you will want to use the sling stud ARCA. Both styles are compatible with attaching bipods using the included sling stud. SLING STUD POSTReplaces the Sling Stud10-32 ThreadsWood Screw Thread Connects to Lock familyConnects to Grip On familyIncluded with purchase: (1) Anywhere Post Wood screw 10-32 X 3/4 SHCS10-32 X 1/4 SHCSL Sling Stud Washer Sling Stud