1-3/4" paper ball shell 1-5/8" Actual with one 1/4" hole on one side other side solid. Holes can be taped over if smaller fuse is desired. These are heavy walled 1/8" quality shell.
2" paper ball shell 1-7/8" Actual with one 1/4" hole on one side other side solid. Holes can be taped over if smaller fuse is desired. These are heavy walled 3/32" quality shell.
3" paper ball shell 2-5/8" Actual with two 1/4" holes on one side other side solid. Holes can be taped over if smaller fuse is desired. These are heavy walled 3/32" quality shell.
4" paper ball shell 3-3/4" Actual with two 1/4" holes on one side other side solid. Holes can be taped over if smaller fuse is desired. These are heavy walled 1/8" quality shell.
5" paper ball shell 4-9/16" Actual with two 1/4" holes on one side other side solid. Holes can be taped over if smaller fuse is desired. These are heavy walled 1/8" quality shell.