The hook of manual retraction is a pin that advances manually along the comb moving from one tooth to another without having to remove it and reinsert it all the time of work.
Available in 3 different types depending on the comb density with the following references:
BRX from 60 mm to 110 mm. / Available blade thicknesses: 0.1 mm, 0.2 mm. and 0.4 mm.
BRL74152 from 74 mm to 15 mm / 0.2 mm. sheet thickness.
BRL93154 from 93 mm to 15 mm / 0.4 mm. sheet thickness.
BRL115104 from 115 mm to 10 mm / 0.4 mm. thick sheet.