This cutterhead is used to produce listels for shutters with either 60 mm or 70 mm length. The set consists of two cutterheads: the upper cutterhead, that is the same one for both listel sizes, and the lower cutterhead, on which it is necessary to fit the knives with radius corrensponding to
the iron fittings chosen (r. 5 - 70 mm, r. 1 0 - 60 mm). The two distance rings are already calibrated for the use.
In special coated light alloy execution, it is used with hard metal knives and is supplied with two cutterheads with the knives already assebled, the two distance rings and the pair of radius knives for the production of the other listel size.