Steps of use:
1.choose the batch head you need to use, rotate 180 degrees and pull out
2.unscrew the handle cover
3.put the batch head into the handle
4.screw the handle cover

Specifications:
24 Bits in the following sizes: 10 x Torx Screwdrivers
(T2/T3/T4/T5/T6/T7/T8/T9/T10/T15)
5 x Cross Screwdrivers (1.0/1.2/1.5/2.0/3.0)
4 x Flat-blade Screwdrivers (1.0/1.5/2.0/3.0)
2 x Pentagon Screwdrivers (0.8/1.2)
1 x Y-type Screwdriver (2.0)
1 x Triangle Screwdriver (2.3)
1 x Point Screwdriver (0.8)

Package Including:
10 x "" (Star hexagon Screwdrivers) (T2/T3/T4/T5/T6/T7/T8/T9/T10/T15)
5 x "+" (Cross Screwdrivers) (1.0/1.2/1.5/2.0/3.0)
4 x "-" (Flat-blade Screwdrivers) (1.0/1.5/2.0/3.0)
2 x ""(Pentagon Screwdriver) (0.8/1.2)
1 x "Y" (Y-type Screwdriver) (2.0)
1 x "" (Triangle Screwdriver) (2.3)
1 x "⊙" (Point Screwdriver)(0.8)
1 x Screwdriver Handle
1 x Black bag