RAW Rolling Papers Brand American Made Die-Hard Aluminum Pollen Press American-Made 6061 Aircraft Grade Aluminum-Magnesium Alloy with a strength of 18,000 PSI. 2.25" Tall - Forms 0.50" Diameter Pollen Cake Includes Four Composite Dowels To use the pollen press, insert one dowel into the press and screw on one cap and stand it up with the open end facing up. Add, the pollen you collected into the hollow cylinder, and then insert the opposite side's dowel, and screw down the caps to compress the pollen into discs.