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. Why NORMCORE Spring-loaded Tamper? Level Tamping — the leveling plate rests flat on top of the filter basket rim as you press, so the tamp lands level every time without needing to eyeball it. Consistent Pressure — tamping force is set by the spring, not your arm. Comes with 3 interchangeable springs (15lb / 25lb / 30lb) so you can dial in the exact pressure you prefer. Depth Control — press and turn clockwise at the same time to seat the tamp; the leveling plate stops further travel once it contacts the basket, keeping tamp depth repeatable. This is the perfect tamper for both aspiring home baristas and busy cafes. Note: Please do not wash it with dishwasher, strong detergent or soaking it overnight/ hot water. PATENT PENDING. 53.3mm: Designed to fit baskets of 54mm diameter, they're fully compatible with many of the Breville / Sage Barista Pro and Breville Barista Espresso Machine models. 51.5mm: Compatible with La Pavoni Europiccola and Professional Millenium models (coffee machines manufactured after the year 2000 – 60 mm diameter group head and 51mm baskets). 49.7mm: Perfect fit for the ROK Espresso Maker GC Tamper and ROK Presso Espresso Makers. 45.5mm: Designed for Flair Pro & Pro 2 Espresso Maker. COLOR & SIZE AVAILABILITY:- Black: available in all 10 sizes (58.5 / 58 / 57.5 / 53.3 / 51.5 / 51 / 49.7 / 49 / 45.5 / 39mm)- White (Teflon finish): available in 4 sizes only (58.5 / 58 / 53.3 / 51mm) INCLUDES :1 - Spring Loaded Tamper1 - Coffee Tamper Stand1 - 30lb Spring1 - 25lb Spring（Already installed ）1 - 15lb Spring
