The Deluxe Lava Tamp solid handle is machine milled aluminum. The Deluxe Lava Tamp piston is machine milled stainless steel, and includes your choice of a flat or convex tamp piston in the following sizes: 58mm, 57mm, 56mm, 55mm, 53mm, 52mm, 51mm and 49mm!!! With many of the desirable characteristics and the same tamp piston as the original "Pro Tamp" the Deluxe Lava Tamp also come with an aluminum crown and on top of that a decorative and functional colored acrylic or Delron cap for dent free tapping of your portafilter.