Descriptions:
These U-shaped bits are made of high quality alloy steel material, which is commonly used material high hardness in hardware.
With 1/4 inch hex Shank, they are fitting for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth.
Get this set and make your life easier.

Specifications:
Material: alloy steel
Head shape: U
Handle: hexagonal shank
Handle size: 6.35mm / 1/4"
Length: 50 mm/2 inch
Specification: U4, U5, U6, U7, U8
Is it magnetic: yes
Quantity: 5 PCS

Length.(mm)
U4 --- 50mm / 2 Inch
U5 --- 50mm / 2 Inch
U6 --- 50mm / 2 Inch
U7 --- 50mm / 2 Inch
U8 --- 50mm / 2 Inch

Package Included:
1 x U4 U-shaped Tip Screwdriver Bit
1 x U5 U-shaped Tip Screwdriver Bit
1 x U6 U-shaped Tip Screwdriver Bit
1 x U7 U-shaped Tip Screwdriver Bit
1 x U8 U-shaped Tip Screwdriver Bit

Notes:
Do not turn the screws with unmatched size, in case get both screw and bit damaged.