920AS chiavi a bussola poligonali 1/2" 3/8-7/16-1/2-9/16-5/8-11/16-3/4-13/16-7/8-15/16-1.1/16 920/21 prolunga - 1/2" 125 mm920/25 snodo 1/2"920/42 quadro maschio 1/2" con spina scorrevole 305 mm 920/55 cricchetto reversibile 1/2"