This is the Grey Pneumatic 9712MG 1/4" Drive 12 Pc. Metric Magnetic Impact Socket Set. It is a high-quality set of sockets with a lifetime warranty. The set includes 12 sockets with a range of sizes from 5mm to 15mm, all in a black oxide finish. The socket set is designed with a 6-point drive type and an impact socket type, making it ideal for a range of automotive tasks.