10 Piece Metric 1/4 Shank Magnetic Nut Driver Socket Adapter Hex Drill Bit Set Description: Hex Socket magnetic socket set socket adapter. Sizes: 6mm, 7mm , 8 mm, 10 mm, 12 mm, 13 mm, 14 mm, 15 mm, 17 mm, 19 mm. Material: Chrome Vanadium Steel (magnetic). Magnetic material , more convenient to use, is not easy to fall off. Used in DIY, carpentry and automotive applications specializing in machine repair and so on.