This Sonic 93-piece metric set is a great start on covering all your bases for metric fasteners. Sockets in 1/4”, 3/8”, and 1/2” range from 5mm to 32mm in shallow and deep-well Flank sockets. Hex-bit sockets cover sizes 10mm to 19mm, along with T8 to T45 Torx, and IPR from 15IPR to 30IPR. Sonic Ratchets and Sockets are made from Chrome Vanadium steel while socket bits are made hardened tool steel. The Flank Sockets have reliefs in the corners, allowing the socket to bite into the flats of the fastener, mitigating the chance of stripping. This kit provides you with a 1/4”, 3/8”, and 1/2” drive ratchet along with multiple extensions in each drive-size. You also get two disc ratchets in 1/4” and 3/8” for those tough-to-reach fasteners.
