They are part of the e2fsprogs package, the latest version being 1.06.
You'll find it on sunsite.unc.edu/pub/Linux/somewhere/
The official web site is:
http://web.mit.edu/tytso/www/linux/e2fsprogs.html
or the ftp site is:
ftp://tsx-11.mit.edu/pub/linux/packages/e2fsprogs
- Ted