Group of manual pliers a) comprising manual pliers of a first subgroup and b) comprising manual pliers of a second subgroup, c) the manual pliers of the first subgroup and the manual pliers of the second subgroup being designed and designated for processing different work pieces, d) the manual pliers of the first subgroup and the manual pliers of the second subgroup having a modular design and comprising identical transmission modules and comprising different pliers head modules, e) the pliers head modules comprising a base body with a housing plate and a fixed cutting jaw, a movable cutting jaw and constructional elements which are required for establishing a pivot joint of the cutting jaws (23, 26), characterised in that f) the identical transmission modules of the manual pliers of the two subgroups comprise fa) identical interfaces for connecting the transmission modules with identical counter interfaces of different pliers head modules (38a; 38b; 38c) for building on the one hand the manual pliers of the first subgroup and on the other hand the manual pliers of the second subgroup and/or fb) identical interfaces for connecting the transmission modules to identical counter interfaces of different manual lever modules (40a; 40b; 40c) for building on the one hand manual pliers of the first subgroup and on the other hand manual pliers of the second subgroup. a) comprising manual pliers of a first subgroup and b) comprising manual pliers of a second subgroup, c) the manual pliers of the first subgroup and the manual pliers of the second subgroup being designed and designated for processing different work pieces, d) the manual pliers of the first subgroup and the manual pliers of the second subgroup having a modular design and comprising identical transmission modules and comprising different pliers head modules, e) the pliers head modules comprising a base body with a housing plate and a fixed cutting jaw, a movable cutting jaw and constructional elements which are required for establishing a pivot joint of the cutting jaws (23, 26), characterised in that f) the identical transmission modules of the manual pliers of the two subgroups comprise fa) identical interfaces for connecting the transmission modules with identical counter interfaces of different pliers head modules (38a; 38b; 38c) for building on the one hand the manual pliers of the first subgroup and on the other hand the manual pliers of the second subgroup and/or fb) identical interfaces for connecting the transmission modules to identical counter interfaces of different manual lever modules (40a; 40b; 40c) for building on the one hand manual pliers of the first subgroup and on the other hand manual pliers of the second subgroup. fa) identical interfaces for connecting the transmission modules with identical counter interfaces of different pliers head modules (38a; 38b; 38c) for building on the one hand the manual pliers of the first subgroup and on the other hand the manual pliers of the second subgroup and/or fb) identical interfaces for connecting the transmission modules to identical counter interfaces of different manual lever modules (40a; 40b; 40c) for building on the one hand manual pliers of the first subgroup and on the other hand manual pliers of the second subgroup.