Handle for 30 oz Yeti Tumbler drink mug. Ring is 100mm inner diameter. updated to add the 20oz handle as well.. Same instructions for both 20 and 30oz versions. i print at 102% scale, to get it to fit right because i like to put a ring of electrical tape inside, to let it grip the sides better. i've printed at 40% infill, with good results. Printed with 2-up printer, (flip 180 deg in X axis, and 45deg in Z axis. at 40% infill, with perimeter of 3 in PLA. for personal use only, do not sell. I've also wrapped the handle with some thin leather and stitched it together to have a nice grip (shown in the 3rd picture)