Mastercool 70057 eccentric cone pipe tube flaring tool  r410a

Pipe tube flaring tool with eccentric cone for 6 sizes: 1/4, 5/16, 3/8, 1/2, 5/8 and 3/4 o.D. Tubing

Eccentric cone pipe tube flaring tool 
Off-center hardened steel cone produces a rolling action for uniform flare walls without galling in 3/16" to 3/4"o.D. Tubing.
Large feed screw handle turns with little effort for smooth operation. 
Black oxide-finished steel flaring bars are heat-treated for durability and secure grip on tubing. 
Recommended for soft materials such as copper and aluminum.