Slip-On Airgun Adapter (11-17mm to 1/2-20 UNF)
Output is the standard 1/2-20 UNF airgun accessory thread. Pair with any 1/2-20 UNF airgun accessory. Output: 1/2-20 UNF. When You Need a Slip-On Adapter. You want a removable adapter that leaves no permanent marks.