I bought these new many years ago, had other sets that got used more than these, and Mac Tools has a Lifetime Warranty, as I’ve sent in several items and they made it right, no questions asked… 16 pc, 10mm thru 25mm, ½» drive, deep impact 6 point, and only 5 really show any use at all, so a great set to add to your existing tools. Retired mechanic, owner of Garner Truck and Trailer Repair Inc. and Bronco LLC.. Decatur, Alabama