Espresso Stainless steel Tamper 51mm Features : With this Professional Grade Tamper, there is No Time For Bad Coffee: With a 1.12 lb heft, unibody design and ‘tech-inspired’ unboxing experience with portafilter key-chain 51mm Diameter: Check the portafilter on your at-home machine right now. If it’s 51mm, and you need a solid, one-piece tool just like baristas use, then your espresso tamp search is over Rust Free Coffee: Made from solid food grade stainless steel in a single unibody design, your espresso tamper will never rust or shed bits of silver coating into your brew. That also makes it 100% dishwasher safe. Coffee is sacred so don’t ruin it with iron, aluminum or chrome coffee tampers. Get Ready For Better Espresso Crema.