10cm length which will probably allow you to use the tips everywhere. Available sizes: T6, T7, T8, T9, T10, T15, T20, T25, T27, T30 and T40 to meet your different needsMaterial: S2 alloy steel - Head type: Torx - 11pcs 100mm long Torx screwdriver bit setMagnetic bits - Thanks to magnetism, screws stick to the bits and can be taken out even from the deepest holes without difficulty and without the need to turn or shake the object where they are, improving your work efficiencyShank type: 6.35mm/1/4", hex. These magnetic bits attract screws. They can be used with hand screwdrivers, electric screwdrivers or electric drillsMagnetic long Torx bits set for screwdrivers and electric screwdrivers (T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40): Strong magnetism, good workmanship, high level of precisionHigh hardness materialThese magnetic bits can be firmly attached to the screwdriverThe length of 10 cm can sometimes be useful if you cannot get close enough to the screwing point with the