This is a variation onto the dumbell wrist curl. Once your form degrades being a fatigue or maybe if the load is too heavy, then please immediately stop and call it a day. Preferably a friend that roughly weighs the same as you (or less should you be an amateur to strength training). https://gitea.Codedbycaleb.com/modestaslate47/2490lifting-sling-chain/wiki/Vacuum-Hoist-And-Onpar-Gps