Made these implements a few days ago and finally got ‘round to trying them out today. Turns out they’re pretty fun and a good multi-aspect workout as well: thumb/pinch/crush grip. Worked up to 105lbs on the 67.5mm width, 95lbs on the 86mm width(mixed size tubing w/ 0.5” gap-this one is similar to the “Anaconda” by John Oka) and 85lbs on the 85mm width.