Features: Solid Food Grade 304 Stainless Steel Base and High Quality Aluminum handle Construction. Choose food safety material to ensure your and your family’s health. Evenly redistributes coffee grounds in a 65mm portafilter (not included) and provides a flat bed of grounds to tamp on. Very Accurate-Three angled slopes Construction reduces the margin for error for baristas which helps to produce more consistent espresso extraction results(Used either in conjunction with flat tamper or with any other 65mm tamper). Height is adjustable by it's screw mechanism (no grub screws ,shims, or allen keys required) to suit different doses or baskets Anti-Rust - It will never rust. Specifications: Base Diameter: about 65mm/2.56in weight: about 500g (17.7oz).