Now catching the spent primers with this device will mean lot less mess dealing with the old primers and trays! You will probably love it so much you will throw away your old original primer tray! The collection tube has been designed to use a half inch I.D. tubing.(not included) This item is designed to only RCBS Partner press Other style presses available in my store. Primer 3D printed director included. Primer Catcher made by me. 3D printed. Made of plastic. Primers go down the catcher into a standard 1/2" x 5/8" tubing found at any hardware store. Note: Press and tubing Not included , This sale is for the primer catcher only.