Due to this being a high demand item there may be a 2-7 day lead time on shipping at times. • Holds objects from 2 3/4" to 3 1/4" (70mm to 83mm) in diameter.• Each clamp supports a safe working load of 50lbs (23 Kilos).• Mounts easily with one 1/4" (6mm) bolt or screw.• Mounting area: 4 1/2” x 1 1/4” (113mm x 32mm). 3" (NOZZLE) QUICK FIST INSTALLATION INSTRUCTIONS 1. The two protrusions on the base will keep the clamp from turning while in use. Using the template below, drill 3 X 1/4" (6mm) holes. The outer two holes need be about 1/8" (3mm) deep. Use a 1/4" bolt or screw and a washer to mount the QUICK FIST clamp.2. The QUICK FIST can be mounted with the strap facing in any direction.3. To clamp: Put the Nozzle between the jaws and push the strap to reach the desired tightness.