Tamper With Three Springs: The espresso tamper 51mm uses an original three-spring design, which not only maintains a constant pressure of 30lbs, but also provides sound feedback. Special Sound Feedback: There's a solid "click" when you hit 30lbs. So you will not have the puzzle of using other tamper tool espresso: "Do I exert 30lbs of pressure? And when should I stop tamping powder?" Ergonomic Handle: This coffee tamper offers a contact surface, which can be more comfortable when tamping. The handle combines wood and metal, elegant and delicate. Compatible with 51mm Portafilter: The spring loaded tamper base diameter is 51mm, which can make the tamper and portafilter basket fit better, effectively reduce the residual powder on the edge of the basket. Fit for the Delonghi Bar32/Bar42/BCO264b, etc. Brand Service: Whether you are a coffee lover or a professional barista, MHW-3BOMBER espresso hand tampers are excellent choice if you want to ensure the premium quality and good user experience from barista accessories. We always focus on creating the best coffee drinking experience for our customers. If you have any questions or suggestions please let us know, we will serve you wholeheartedly in the first time. MHW-3BOMBER 51mm Espresso Coffee Tamper with Spring Loaded Calibrated Espresso Tamper 30lb T6174T