At approx 500g this ProTamp series tamper offers a professionally weighted solid stainless steel flat base with an anodized aluminium handle. Currently available in Black, Blue, Green and Red Anodized colors & Polished Aluminium. Also available in 51 mm & 52 mm with polished aluminium finish. Anodizing, or anodising, is an Electrolytic Passivation (Electroplating) process used to increase the thickness and density of the natural oxide layer on the surface. Anodized finishes are generally much stronger and more adherent than most paint platings and powder coats, making them less likely to crack and peel. Anodizing increases corrosion and wear resistance.