1. WHY Spring-loaded Tamper? Whether you are a novice or an experienced barista, it is always a challenge when comes to coffee tamping. Traditional coffee tampers are prone to skew or oversampling may even ruin a perfect shot. Over time, it also causes a strain injury. With 's Spring-loaded Tamper that features an ingenious leveling guide, we know it can solve these problems well.<br>2. Upgraded features from V3: This V4 tamper has further improved on the central shaft design, also the interchangeable springs (15lb/ 25lb/ 30lb) are now applicable to the central shaft which provides pressure directly to the coffee grounds.<br>3. Fits 54mm Portafilters: Designed to fit 54mm Portafilters which are tapered (Suitable /Sage models including the Barista Express, Pro, Touch, Bambino Plus, Infuser, and Duo-Temp Pro)<br>4. Unique Design: The coffee tamper is made of a 304 stainless steel base with Anodized Aluminum handle. Our coffee tamper is spring-loaded and does not require additional adjustments. It has an ergonomic handle with a comfortable grip that allows you to push ground coffee easily.<br>