GREAT ESPRESSO TASTE -Our calibrated tamper with its integrated precision release mechanism allows you to reliably tamp at the required pressure to produce the best, consistent result every time. PROFESSIONAL QUALITY - The calibrated espresso tamper has a 51/53/58mm stainless steel base with no coating, hand material is high-quality aluminum alloy, rust-proof, stain-proof, unbreakable by daily use. UNIQUE DESIGN- The tamper has an exquisite appearance, aluminum alloy design, the handles were ergonomically designed to ensure perfect grip and easy manual control, great for tamping fresh ground espresso before brewing, an extremely nice gift for any coffee lover. 30-POUND PRESSURE FEEDBACK-calibrated tamper has a handle that is separated from the base of the tamper. The handle and base will connect when pushed to 30 pounds of pressure. Calibrated tampers are perfect for beginner baristas or pros who want to be 100% sure they applied the correct pressure. PORFESSIONAL SIZE & NOTES- Tamper base is professionally designed, Please check your portafilter size before purchase, or you can contact me and we are happy to help your choose correct size; Protect your tamper and get the best results out of your tamper by using one of our tamping stands or tamper mats.