Features: 1. Precisely and automatically machined bit tips ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges. 2. Designed to tighten and untighten high torque triple square screws and bolts commonly used in the alternator and pressure plate of cars. 3. Sockets are made from heat-treated chrome vanadium steel for high strength and durability, providing stable and reliable performance. 4. Includes a sturdy plastic organizing case for secure storage and easy carrying. 5. Constructed with chrome vanadium steel and ABS material, offering high hardness to reduce wear and ensure longevity. Specification: Item Type: Drive Triple Square Bit Set Material: Chrome vanadium steel and ABS 12 Angle Pattern M4 M5 M6 1/4 inch (6.35mm) Length: Approx: 37mm/1.45in M8 M9 M10 M12 3/8 inch (10mm) Length: Approx: 48mm/1.88in 12 Angle Center Hole for M14 3/8 inch (10mm) Length: Approx: 48mm/1.88in for M16 M18 1/2 inch (12.5mm) Length: Approx: 55mm/2.16in Note: 1. Please allow slight error due to manual measurement. 2. Monitors are not calibrated the same, item color displayed in photos may vary slightly from the actual product.