1.75" HDPE Mortar Tube DR11, 8" Length 1.91" ID A mine shell breaks right out of the tube shooting stars from the ground up. Having a short tube like an 8" will help make the mine shell have more of a spread. Our mine tubes are plugged with a 1.5" pine plug.

Inside Diameter: 1.91"
Outside Diameter: 2.40"
Wall Thickness: 0.25"
Length: 8