Ridgid 600 Series Instrument Benders, 3/8 in; 15/16 in

I was working with complex precision bends with 3/8" copper pipe, and the generic cheap benders were far from adequate, causing compression, or deformation through the bends. I bought these on the basis of the reputation of the brand Ridgid , what can I say, WOW, these are world's apart from the cheap unbranded products, admittedly, perhaps a little inconvenient needing a separate bender for each pipe/tube size, however, these are a precision product, and more than fit for purpose across a wide material range.