Parker's Exactol® Model 412 Crank-Operated Bender will bend tube from size 4 (1/4") through size 12 (3/4") and 6mm through 20mm. This portable bender can be held in a vise or bench mounted using a bench mounting adapter. Exactol benders are designed with a worm-gear drive with a 60 to 1 gear ratio to allow accurate bending with minimum effort. Features/Benefits:• Will bend aluminum, copper, annealed steel and annealed stainless steel without kinks or wrinkles. • Small, large and close bend radius blocks are available to meet any bending requirement. • The easy crank operation permits continuous production without excessive operator fatigue, and it is good for use in tube fabrication shops, in the field, or in factory maintenance departments. Applications:• Bending metal tube for industrial applicationsTechnical Characteristics:• Requires a slide block and radius block matching the tube O.D. to be bent.• If mandrels are used, the 412 bender must be bench mounted.• There is a kit option available which includes the slide block and radius blocks for tube O.D. sizes 1/4" to 3/4".