[More Size Selection]: 1/4 allen hex bit set with 10Pcs deifferent sizes: H1.5, H2, H2.5, H3, H4, H5, H6, H8, H10, H12. 75mm/3 inches length, with bit holder storage to meed your needs. [Premuim Material]: The metric allen bit set are made of heat-treated high quality solid S2 Steel, the surface adopts sandlasting process to increase the life of the bits, strong rust and corrosion resistance, also high temperature quenching treatment improves durability and life. [Strong Magnetic]: Strengthened magnetic allen wrench drill bit set help you to pick up screws easily, improve your work efficiency, convenient to use in multiple work scenarios, especially in tight space. [High Precision]: Hex head drill bits set are heat treated for durability, they have a proper hardness and torsion that make the bits not easy to break and wear. [Wide Application]: Hex key bit set are 1/4 inch quick release hex shank driver bits, suitable for electric screwdriver, hand screwdriver, electric drills and air drills. Feature
Great replacement for missing, bent or broken hex head drill bits.
The magnetic 1/4 hex allen bits helps to keep nuts and screw stuck to them.
3 inches hex screwdriver bit for accessing tight and deep-set screws.
S2 steel, hardness can reach HRC60 degree, very well made and tough as nails.
1/4" Hex shank fits most impact driver, electric screwdriver, power drill and so on.
Perfect for woodworking, metalworking, electronics repair, and more.

Specification
Head Type: Hex head bit
Size: H1.5 H2 H2.5 H3 H4 H5 H6 H8 H10 H12
Material: S2 Steel with sand blasting process
Length: 75mm / 3 inches
Shank: 1/4 inch Hex Shank