EMT shere are kind of like knives or anything normal product, meaning there are great ones and terrible ones.

a pair of high quality EMT sheers will cut through anything and last for years. a pair of cheep ones will just about break trying to cut a stick on badage (aka band-aid)

I am not sure if they are all autoclavable, I would sugest rather than buying them online (unless you know the quality of the item you are buying) go to an EMS or Police supply store and feel them. look to see if they are autoclavable and see if they are sturdy. good quality ones will cut a pennie into a corkscrew easly.

I carry about 4 pair (not all at once) and I have them all over my house and a couple in my car. They are literaly life savers.