Casey’s Fireworks stocks the biggest mortar fireworks and artillery shells in our Pro Zone. These are the largest fireworks that consumers can buy without a license—and they are big. So loud they set off car alarms.

From the old school ball-style artillery shells to the modern canister-shape shells, mortars are an essential part of any fireworks show. These days, canister shells are sold by size, in 4-inch, 5-inch, 6-inch, and 7-inch varieties. Check em’ out: