1.These security torx screwdriver bits are with magnetic design( just use a magnetizer to magnetize it if the magnetic reduces after a long time use).
2.Superior Quality: Those Cross Screwdriver Bits are made of S2 steel, which is a commonly used material in hardware with high hardness.
3.Ideal Magnetic Screwdriver: Those bits fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth, great replacement for missing, bent or broken screwdriver bits.
4.Easy to install on your screwdriver handle of the bit shank.

Spercification:
Product Name: Security Torx Screwdriver Bits
Material: S2 Steel
Color: Silver Tone
Tip Size: T20
Total Length: 100mm / 3.94inch
Hex Shank Size: 6.3mm / 0.25 inch
Finish: Sandblasting 

Package Content:
5pcs x Security Torx Screwdriver Bits