Decent product. I removed some bolts from my diesel boat's gearbox and had to use a pipe to increase leverage, it was so rusty and stuck. There were no problems with the key. My poor review was due to the fact that I received a used product with a clear lube and the fabric pouch is so worn that large wrenches are almost carried through the material. A pair of wrenches also had decent scratches from previous use. I didn't have time to go through the return process so I had to keep them.