1、100% brand new and high quality. 2、Made of chromium vanadium alloy steel, it is strong and durable and has a long service life. 3、Having strong corrosion resistance, it is not easy to rust. 4、It has various specifications to meet different needs. 5、It can be used in car maintenance, factory production, mechanical assembly etc. Features: 100% brand new and high quality. Made of chromium vanadium alloy steel, it is strong and durable and has a long service life. Having strong corrosion resistance, it is not easy to rust. It has various specifications to meet different needs. It can be used in car maintenance, factory production, mechanical assembly etc. Specification: Condition: 100% Brand New Quantity: 16PCS Material: Chromium Vanadium Alloy Steel Specification T5 T5.5 T6 T7 T8 T9 Length of Bit 25mm/1in 25mm/1in 25mm/1in 25mm/1in 25mm/1in 25mm/1in Specification T10 T15 T30 T20 T25 T27 Length of Bit 25mm/1in 25mm/1in 25mm/1in 25mm/1in 25mm/1in 25mm/1in Specification T30 T40 T50 Length of Bit 25mm/1in 50mm / 2in 50mm / 2in Hex Chuck Diameter: Approx. 6.35mm/0.25in The Sleeve Diameter: Approx. 6.35mm/0.3in Package List: 16*Screwdriver Bits