[10 Pcs Set] This triangular screwdriver bit set includes 10 sizes (TA12, TA14, TA16, TA18, TA20, TA23, TA25, TA27x2, TA30), with 50mm length and 1/4 inch hex shank. [S2 Steel Material] Crafted from S2 Steel, CNC machined and hardened, these triangular screwdriver bits have high strength, not easy to break, ensuring long lasting use. [Magnetic Design] Magnetic bits allow for easy screw retrieval, preventing parts from falling off, suitable for fine processing, the magnet will not corrode after multiple uses. [Wide Application] Suitable for furniture assembly, garage, automotive, cycle, plumbing, construction, and other maintenance work applications. [With Storage Rack] This screwdriver bit set comes with a convenient storage rack, helping maintain a tidy work space while clearly marking the sizes for quick access and organization. Specification Item Type: Triangular Screwdriver Bit Set Material: S2 Alloy Steel Specification: TA12 TA14 TA16 TA18 TA20 TA23 TA25 TA27(x2) TA30 Size: Approx. 50mm / 1.97in Hex Shank: 1/4 Inch How to Use Connect to power tool and use. Package List 10 x Triangular Screwdriver Bits 1 x Storage Rack