Stainless steel at its best!!  It's well worth the extra $20.00 from any aluminum press on the market-this  hash press will last a lifetime ! The quality is outstanding and very smooth operation even comes with a very strong gift box for easy storage . Measurements of this pollen press is 3 1/2 inches tall - 93 mm- the inside cylinder will make hash pucks about the size of the U.S. A - 5¢ nickel 3/4 inch wide -19.8 mm. Have a look at this video for more information http://www.youtube.com/watch?feature=player_embedded&v=ULWz0hNnwIg