This TecoTek impact torx bit socket Set is made with durable S2 steel and sockets have CR-V Steel material with blackened manganese phosphate finish that offer exceptional strength and resistance to wear, longevity and a reliable performance over time. Precisely and automatically machined bit tips to ensure accurate size, allen wrench socket set chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges. Easier to keep up with, easier and quicker to find the correct size, also quicker to notice one missing. Abundant variety of sizes make repairs easy on any car, bike or motorcycle, and perform industrial work for machinery.