Vellum heads are available in any kind of animals skin in standard thickness or more for using musical drum heads, Tambourines heads, Conga and Bongos heads, Bodhran heads in assorted sizes in diameters. More over any kind of skin heads are available with hairs as well for the purpose of musical instruments or in the certain requirement.
Available in various diameters
Exact thickness varies
REMEMBER - you need a bigger skin than the size of your drum
Its better to trim it afterwards than struggle with too little overlap when skinning . . . . .
Allow at least 3 inches extra for bodhrans /Frame drums