3/16 tubing bender
thingiverse
a bender for 3/16 tubing, intended for brake line but would work for any tubing the correct diameter made to use #10 machine screws as pivots / handle retainers, and 1/4" tubing a handles chose #10 as you will need to drill through the handle tubing and most people have a 3/16 (really close to same size) drill bit hope it helps.
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