Rckiwi : yes there is only 1 bolt holding the cleats this owrried me to start with also but the aluminium is soft and bites into the chain once the bolt is tight and cant be twisted.
Pumptech : i cant take credit for the metal work that was my dad, i cut the shapes out and he welded it for me when i was at work
didnt make a build thread for my bruder to be honest i struggled with the screwdrives they didnt seem to have any power, we got it working i moved some sand with it then it got shelved and i started building this.