TMI-364M-8. Professional quality tube bender Combine accuracy with easy operation. • Offset cushion grip handles eliminate knuckle cracking when forming 180° bends. A 90° start angle and unique oil-absorbing shoe minimize bending effort while forming accurate bends in copper, steel and stainless steel tubing. • Tube Size, O.D. 8MM/5/16" • Radius to Center of Tube : 11/16"