I made these up got sick of the 2 ft. 2inch tubes they cost $20. now plus shipping. These are 21/2 inch od. 12 inches high, have a built in Baffle and work good on my 366s. They also fit the DL-155 and others. Also the PVC clear tubes can be replaced 3 Screws i have them. So i made more for friends and now have extra ones left now making more. They hold a lot of Shot and Powder and fit tight on the Head. You must have the Screw on Hoppers the Plastic push pins will not work. $25. for 1 Hopper, .PLUS shipping. Sold over 20 every body is happy so far! I can't get the pic upright!! Thank