Unique Bargains 5 Pcs 1/4 Shank 5.5mm Hex Socket Spanner Nut Driver Bits

The bell-shape Hex Driver Bits allows the bit to hold the bit securely in place for quicker installations.Hex Nut Drivers designed and engined for long life and good durability for operating.Hex Nut Drivers are used in manufacturing assembly systems and others.