Professional semi-automatic trimmer head (tap-and-go) with 2 nylon lines. Including 5 adapters (M10 x 1,00 LHF, M10 x 1,25 LHF, M12 x 1,5 LHF, M12 x 1,75 LHF, M14 x 1,5 LHF) enabling the user on mounting this head on the most popular STIHL, ECHO, HUSQVARNA ... Suitable for machines >35 cc. Replaces original STIHL 40-2, 4003-710-2189.