For 1/4 in to 7/8 in. Spring benders slip over soft copper and aluminum tubing during bending to help prevent tube collapse. Yellow Jacket Spring Tube Bender, 3/4 in Nominal Capacity, Silver Plated, Applicable Materials: Soft Aluminum and Copper
The Yellow Jacket 60360 is a 3/4 inch O.D. Bending spring, that is used to slip over soft copper and aluminum tubing during bending to help prevent tube collapse.