Features SPECIFICATIONS: 12 in 1 ratchet screwdriver set, including 6pcs double ended screwdriver bits, with 12 different specifications for a wide range of applications. EXCELLENT MATERIAL: Made of excellent chromium vanadium alloy steel, nickel plating on the surface, with high hardness, high torsion and good corrosion resistance. MULTIPLE FUNCTION: These screwdrivers have quick release mechanism and self locking function, and the drill can be changed with one hand, convenient and reliable. BALL BEARING DESIGN: The driver has 3 ball bearings inside for quick clamping and prevents the drill from slipping off, with 3 ratchet modes for clockwise, counterclockwise and locked positions. WIDE APPLICATION: Suitable for all work in small spaces, such as home repairs, tool repairs and various industrial fastening needs, with low effort to operate. Specification: Item Type: Ratchet Screwdriver Set Material: Chrome Vanadium Alloy Steel Format: Metric Screwdriver Specifications: SL6 Slot and PH2 Slot Inner Cross and TA2.6 Triangle T2.3 Triangle and 3 Points U2.3 U Type and T30 Star T20 Star and T25 Star T15 Star and Y1 Type Package List:1 x Handle6 x Screwdriver Bits Package List 1 x Handle 6 x Screwdriver Bits