To use this, you'll need to get appropiate bolts (you may wish to alter the dimensions in the part file) as well as a footrest. I used this one on Amazon: https://www.amazon.com/gp/product/B09D3B7W4K/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1

Any such similar rest should be just fine. You'll want to print this in a material with high resillience. NO PLA, ABS or ASA is preferred. I've not tested Nylon or PC but presumably, those would work as well. Use a higher than average wall count. Higher infill will make it more rigid but does not affect strength (as always).