1. Material: This precision screwdriver set contains 24 doubleended screwdriver bits, a total of 48 models, ensuring you have a good use experience. The screwdriver bits are made of chrome vanadium steel, which has hardness and long service life. Handle made of aluminum alloy, which is very suitable for various work. 2.Portable Size: The whole box size is 6.78*16 cm/2.67*6.29 in, the handle length is 126 mm, and the total weight is only 192 grams. Save furniture storage space easy to carry. 3.Magnetic Adsorption Easy Operation: The rod has a builtin strong magnet to easily adsorb screws. The 360degree rotatable tail cover design makes onehanded operation easy and comfortable. The Toolbox cover adopts a sliding cover design, which is convenient and barrier. The groove is magnetic, and the screwdriver head will not fall off even if the Toolbox is inverted. 4.Screwdriver Blade Type: Hexagonal head H0.7, H0.9, H1.0, H1.3, H1.5, H2.0, H2.5, H3.0, H3.5, H4.0 Plum safety screw T5H, T6H, T7H, T8H, T9H, T10H, T15H, T20H. Philips PH0000, PH000, PH00, PH0, PH1, PH2. Triangular head Y0.6, Y1.5, Y2.0, Y2.5, Y3.0, Y3.5 Flat head SL1.0, SL1.5, SL2.5, SL3.5 Triangular head 2.0, 2.3, 2.7, 3.0 TORX T1, T2, T3, T4 Ushaped head U2.3, U2.6 Pentagonal head P0.8 P1.2 SIM ICS MID.