Adjustable Interface: The adjustable interface allows you to press down to adjust bit length and change bits. Strong Magnetics Process Bits: The strong magnetics design on the heads of bits to and firmly the screws and your working efficiency. Various Types of Bits: Comes with various types of bits such as slotting shape bits, the crossing bits and other types bits to meet your different needs. Portable Size: The small size of this tool is convenient for everyday use. Preferred : This bits are made of chrome-vanadium steel , superior wear and corrosion resistant, not easy to rust and can a long service time. 13pcs bits size: U2.3, T5, T6, T7, Y0, 2.0, 3.0, T8, T10, T15, 3.0, 2.3 points bit Colour:grey :Chrome vanadium steel Package Contents: 1 x Screwdriver 12 x Bits 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.