Yifong's own series:
1. Pulling resistance up to more than 600lbs series; loop can not rotate, sizes 1inch, 1.25inch, 1.5inch available. Round smooth edges, quick detach, very nice surface handling. Plastic or metal stud locker for options.
2. Trapezoid shape of loop; loop can rotate, sizes 1inch, 1.25inch available. New size can be customized. Pulling resistane up to more than 225lbs. Black,matt, silver, and antique brass colors.