The Snap-on Impact Socket Sets are a high-quality set of standard sockets ranging from 8 to19-21-24mm, with a total of 14 sockets on each rail. These durable sockets are designed for use metric measurements, featuring an impact surface finish for corrosion resistance. The set includes both long and short sockets, providing a versatile and essential tool for any automotive technician or mechanic. With the trusted Snap-on brand and lifetime warranty through snap on, these socket sets are a reliable choice for professional use.