Tornillos de cabeza hexagonal métricos M3, accionamiento de zócalo Allen M3 x 4 mm/ 5 mm/ 6 mm/
The screws set has 140Pcs M3 screw bolts, 140Pcs screw nuts and 2Pcs hex keys. The bolts sizes is 4mm/ 5mm / 6mm/ 8mm/ 10mm/ 12mm/ 16mm/ 18mm/ 20mm. 12.9 screw bolt is one of the highest grades of bolts produced.