WHY NORMCORE 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 Normcore's Spring-loaded Tamper that features an ingenious leveling guide, we know it can solve these problems well. 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. 54mm Dosing Funnel for Breville- Specially designed to work with Breville Barista Express, Barista Touch, Barista Pro, Infuser, Duo Temp pro. Hands-Free Dosing Funnel- Simply twists to lock onto your 54mm Breville portafilter and sits securely on the portafilter under the built-in grinder for a hands-free grinding session. Reduces the Mess and No More Waste- Easy to hold a full 21 gram shot, great for coffee grinding, avoid spillages, no more waste your coffee with this 54mm Dosing funnel.