i tried the bolt them in method and the results were crap ! the threaded rivet didnt deform as it should and was loose in the hole it didnt help i couldnt hold the rivet so it was turning inside the hole, no access behind. so i bought the tool to do the job. i aint seen the steel ones ? thought the ally ones would be more suitable for the ally doors. if a jobs worth doin its worth buying the right tools

if it isnt worth doin borrow them