Wago wsb quick marking system for terminal block 5 175mm alphanumeric 249 ser wago 249 619 wago 249 619 wsb quick marking system for terminal block width 5 175mm vertical marked f41 f50 10ea 10 strips with 10 markers per card white wago 249 619 wsb marking system for terminal block 5 175mm f41 f50 white 5pk