Exquisite workmanship, magnetic can accurately lock the screw, without damaging the screw and screwdriver head. Precision tip geometry provides excellent fit and reduces peeling and cam shedding. Adopt 1/4inch quick change hexagonal shaft, which is widely used in electric screwdriver, hand screwdriver, rechargeable electric drill and so on. The screwdriver head is made of steel. After heat treatment, it has good toughness, wear resistance and long service life. Equipped with plastic storage box, easy to store and carry. Name: screwdriver head set Material: steel Batch head style: /Slotted screwdriver Specification: 1/4(6.35mm) Quantity: 10pcs/set Colour:silver Package Contents: 1 x Screwdriver head set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.