The Adjustable Gaffer Grip has one fixed baby 5/8" (16mm) stud and one reversible baby 5/8" stud with both 1/4" – 20 and 3/8" – 16 threads on either side. The reversible stud is mounted in a baby 5/8" (16mm) receiver. The G500611 jaws can be adjusted from 0.98 – 2.56" (25 – 65 mm) and is clad in a stealthy black finish.