✅【Size Include】1/4"Dr.: 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm; 3/8"Dr.: 9/32", 5/16", 3/8", 7/16", 1/2", 7mm, 8mm, 9mm, 10mm, 11mm, 12mm; 1/2"Dr.: 9/16", 5/8", 11/16", 3/4",14mm, 15mm, 17mm, 19mm; 1/4"F to 3/8"M, 3/8"F to 1/4"M, 3/8"F to 1/2"M, 1/2"F to 3/8"M Adapters, 1/4" to 3/8" Impact Drill Adapter ✅【Premium CR-V】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. ✅【Precise Engineering】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. ✅【High Visibility Markings】The storage case has printed size and all drive tools have size markings on sockets for easy identification. Convenient for getting suitable size accessories, saving time and effort. ✅【Versatile Applications】All TecoTek Tools meet or exceed ANSI performance standards. It comes with 1 year quality guarantee. Abundant variety of sizes make repairs easy on any car, bike or motorcycle, and perform industrial work for machinery. This TecoTek 38PCS hex impact 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.