if you're wanting to make tubes. I suggest contacting Jacob bait's . He definitely has three different sizes three-inch in 2" in 11/2" precut in the mold. We also carry all three sizes if you're wanting to not put much money into this project you could use either rods or nails and dip them in hot plastic when they cool: pull them off the rod and use a razor blade to cut the tail real simple process.