Length of 10 cm 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 needs Material: S2 alloy steel - Head type: Torx - Set of 11 Torx screwdriver bits, 100 mm long Magnetic bits - Thanks to magnetism, the screws stick to the bits and can be removed, even from the deepest holes, without difficulty and without hassle 'it is necessary to turn or shake the object where they are located, which improves your work efficiency Rod type: 6.35mm/1/4", hexagonal. These magnetic bits attract screws. They can be used with manual screwdrivers, electric screwdrivers or electric drills