Insulated ScrewdriverThe screwdriver is made of high quality chrome vanadium steel material and has high hardness and toughness, durable and sturdy. The screwdriver and the handle also have an insulated construction. Magnetic The insulated head is magnetic, which prevents the loss of small screws and provides better control. Handle Ergonomic The shape of the handle ensures maximum comfort and excellent power transmission. The handle is made of plastic, soft but slippery. Various SizesThe screwdriver set contains seven different sizes +PH2/-6.0, +PH1/-5.0, +PHO/-3.0, Y1/Y2 , T10/T12, T15/T25, U2.6/-4.0 and each screwdriver has two heads. Can meet your concerns. Portable Design Screw rotary sets are arranged in a transparent storage box, easy to carry and prevent loss. You can also hang the box after abuse, very space-saving.