1pcs Torx Magnetic Features 3mm torx diameter and a 1mm security hole 75mm/ 3 in shaft length, 5.4 cm/ 2.1 in handle length Chrome vanadium steel with corrosion resistant satin and magnetic tips, it is more convenient and practical for use. Ergonomic non molded grips for improved comfort and control when used for DIY -making like electronics repairing, computer hard driver or cell phones repairing.