Durable 1 1/2 Inch Scaffolding Coupler for Safety - Swivel Clamp

Clamps are versatile tools that serve to temporarily hold work securely in place. They are used for many applications including carpentry, woodworking, furniture making, welding, construction and metal working.
The core benefit of a swivel is to prevent your line from twisting, so situations in which line twists are a risk is when swivels should be used. Note: Line twists are bad for anglers because twists can weaken the line and they also can cause the line to get itself into knots when casting (ex: those pesky wind knots).
A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure.
Swivel clamps also known as swivel couplers are used to connect scaffold tubes at any angle. Its main purpose is to provide flexibility in the scaffolding. For example, if the construction calls for multiple angled positions for the scaffolding, the swiveled clamp may support that design.
 

Ties must be placed as near as possible to horizontal members. The bottom tie must be placed no higher than four times the minimum scaffold base dimension (length or width). Subsequent vertical tie placement will depend upon the scaffold width.
#1) Make Full Contact With the Pressure Plate. You should make full contact with the pressure plate and the workpiece when using a clamp. #1) Make Full Contact With the Pressure Plate. You should make full contact with the pressure plate and the workpiece when using a clamp. 
#2) Regularly Oil. Clamps require maintenance. ...
#3) Wear Safety Goggles. ...
#4) Tighten By Hand. ...
#5) Avoid Over-Tightening.