Try Henry Schein, Medical Catalog 98,  800 772-4346    or 800 872-4346

Dermal punches, and you can purchase a box of 25 with
assorted sizes (nice way to determine the size you need!) for approx
$41.
Catalog number 378-6156.  You get 5 each of 2, 3, 4, 5mm punches.

also have boxes with one size only.

They have one of the best selections of forceps, eyeglass magnifiers,
and face shields for safety  without killing you on price.

It is worth it to have both catalogs, Medical and Veterinary for a huge
selection of items used in histo labs.

I remember getting a discount.

Gayle Callis