u/Connect-Television16

Boardman TT bike from ~2015 with rim brakes that have been a mega faff to tinker with and adjust. There's no screw for spring tension. Instead it's a spanner on that hex nut and Alan key, which is incredibly frustrating when I'm daft and the spanner slips so I have to start all over again. Does anyone know from looking what other rim brakes would be compatible? Thanks in advance