21Pcs/Set S2 Alloy Steel 1/4 Inch Hex Shank Magnetic Screwdriver Bits Set with Extension Bar for Power Tools •【Metric Sizes】This set includes metric-sized hex bits: H1.5,H2,H2.5,H3,H3.5,H4,H5,H6,H7,H8,H10,covering a wide range of screw sizes for various disassembly needs •【High Hardness and Durability】Made of S2 alloy steel and professionally heat-treated,the hex screwdriver bits achieve a hardness of up to HRC60,ensuring long-lasting durability and resistance to wear •【Magnetic Tip Design】The hex bits feature magnetic tips that securely hold nuts and bolts,enhancing work efficiency and making them suitable for a wide array of applications •【Ergonomic Design】The 1/4-inch hex shank design improves tool flexibility and torque concentration,providing better workmanship and a comfortable user experience •【Fine Craftsmanship】Crafted with a phosphate black finish,the hex bits boast a sleek appearance and extended service life,ensuring consistent high performance over time •【Versatile Use】This hex screwdriver bit set is perfect for furniture repair,electrical work,automotive maintenance,and other applications,bringing convenience to your work and everyday life •Specifications: •Material: S2 alloy steel •Length: 25mm,60mm •Type: H1.5/2/2.5/3/3.5/4/5/6/7/8/10 •Scope of application: furniture repair,car repair,electrician repair,electrical repair,etc. Package included: •20 x Screwdriver Bits (with Socket) •1 x Extension Bar •Other items not include