I bought these for my husband because I gave his away to a repairman who had never had a pair for DIY projects. They are great for grabbing things down in small places, like pulling wires through small apertures, and automotive repair. Unfortunately I bought ones bigger than my hubby wanted, so I will order some smaller ones next.The quality of these seems just great so far, and the price was low. They lock well. I don't know how they would actually perform for surgery. I hope if I need surgery that I will get to have it done in a hospital, and not have to try these on myself. But if the zombie apocalypse comes and I am injured, I would not hesitate to try these.