Features: 1.Features: Precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges. 2.Application: To tighten and untighten high torque triple square screws and bolts commonly used in the alternator and pressure plate of cars. 3.Performance: Sockets are made from heat treated chrome vanadium steel for strong strength and durability, stable and reliable performance. 4.Portable Box: Spline tip bit socket set includes a sturdy plastic organizing case for secure storage and easy carrying. 5.Reliable Material: Chrome vanadium steel and ABS material, high hardness that reduce wear outs and insure longevity. Specification: Item Type: Drive Triple Square Bit Set Material: Chrome vanadium steel and ABS 12 Angle Pattern M4 M5 M6 1/4(6.35mm) Length: Approx: 37mm/1.45in M8 M9 M10 M12 3/8(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. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.