HK-364A, used for bending O.D. Tube 1/4" (radius 14.3mm)

HK-364B, used for bending O.D. Tube 5/16" (radius 17.5mm)

HK-364C, used for bending O.D. Tube 3/8" (radius 23.3mm)

HK-364D, used for bending O.D. Tube 1/2" (radius 38.5mm)

HK-364E, used for bending O.D. Tube 5/8" (radius 56.5mm)

HK-364F, used for bending O.D. Tube 3/4" (radius 75.5mm)

HK-364G, used for bending O.D. Tube 7/8" (radius 84.2mm)