HIGH QUALITY: These U-shaped screwdriver bits are made of high quality S2 alloy steel material, which is commonly used of high material hardness, makes these screwdriver bits sturdy and durable. MAGNETIC HEAD: The magnetic bit head is convenient to use and does not slip, more convenient. 5 SIZES: This screwdriver bit set included 5 different sizes in U shape, can meet your your different needs. CLEARLY MARKED: Surface printed with specifications, easy to find the screwdriver bit in your toolbox. WIDE APPLICATION: It is useful to use a electronic device, perfect for electrician, mechanical repair work. Product Description 1/4" Hex Shank U-Shaped Magnetic Screwdriver Bit Set Features: Material: S2 Alloy Steel Head Shape: U Handle: Hex Shank Handle size: 6.35mm / 1/4" Length: 50mm / 2 inch Specification: U4, U5, U6, U7, U8 Is it magnetic: yes Quantity: 5 PCS Package Included: 1 x U4 U-shaped Screwdriver Bit 1 x U5 U-shaped screwdriver bit 1 x U6 U-shaped screwdriver bit 1 x U7 U-shaped screwdriver bit 1 x U8 U-shaped screwdriver bit These U-shaped bits are widely used, suitable for electric screwdrivers, hand screwdrivers, electric drills, etc. Notes: Do not turn the screws with an unmatched size, in case the screw and the bit are damaged.