Honing SUNNEN HTA-2100 Our Sunnen tubular honing machine is capable of removing up to .030″ with an accuracy of .0005″ and a surface finishes better than Ra 8µ”. Outside Diameter Max 24″ (610 mm) Inside Diameter Range 2.5″ – 21″ (64 mm – 533 mm) Maximum Part Length 155″ (395 mm) Equipment Turning Milling Honing CMM Other Equipment