5pcs M10x30mm 12.9 Grade Hex Socket Cap Left Hand Thread Screw Bolt Black Screwdrivers They also can be used

They also can be used into machinery

Magnetic Hex Socket Nut designed and engined for long life and good durability for operating

motorcycle

has a hexagonal slot that requires a hex key drive

5pcs M10x30mm 12.9 Grade Hex Socket Cap Left Hand Thread Screw Bolt Black Screwdrivers They also can be usedMade of carbon Steel material,black oxide finish,hex socket head,left hand reverse thread design. Fixing component, industrial and construction fasteners. To tighten a reverse threaded screw, you turn it counter clockwise. To loosen a reverse threaded screw, you turn it clockwise. Used widely in home, office and factory appliance, communication equipments, ship assembly and other machinery industry.