Features:
The set contains 12 piece industrial grade security torx bits, made of premium S2 steel, compatible with all torx bolts and torx screws, including the temper proof security torx screws which have the pin in the center.
All the bits have strong magetic tips, will hold the screws and bolts in place.
These bits have 1/4" quick change hex shank, works well with electric screwdrivers, T-handle 1/4" driver screwdrivers, corded drills, cordless drills, impact drivers etc..
Specifications:

Head Type: Torx head

Shank: 1/4-inch (6.35mm) hex shank

Material: S2 steel

Size: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40

Length: 2" (50 mm)
Magnetic: Fully magnetic

Package Included:

1 * T5, 1 * T6, 1 * T7, 1 * T8, 1 * T9, 1 * T10, 1 * T15, 1 * T20, 1 * T25, 1 * T27, 1 * T30, 1 * T40 Screwdriver bits
EXCELLENT MATERIAL - The screwdriver bits are made of high quality S2 steel, high hardness, wear resistance and impact resistance, the surface adopts sandblasting process, reliable for long time service.
VERSATILE BITS - Include 12 Torx Screwdriver Bits, T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40, competent for various working conditions.
STRONG MEGNETIC - Easy to hold the screws, convenient to use in multiple work scenarios, especially in tight space, clearly engraved marks for identification.
HIGH PRECISION - The precision is strictly controlled in production process, perfectly fits the screws, prevents slipping or shuttering, the bits are straight and concentric, effectively reducing the bits wobble.
WIDE APPLICATION - These bits are compatiable with electric screwdrivers, manual screwdrivers, T-handle 1/4" driver screwdrivers, corded drills, cordless drills, impact drivers and more. Usually used for mechanical equipment, automobiles, motorcycles, bicycles, furniture, toys, electronic equipment, household appliances, etc.