1.100pc tool set
2.25mm length and 1/4"
3.all kinds of screw driver bits

100pc tool set
1.100pcs kind of screwdriver bits

2.all kind of bits to select such as ph,pz,sl,torx,square,Y and so on

3.length:25mm

4.1/4"

5.surface:sandblast

6.package:in black case