Description Perfectly fits 51mm, 54mm, and 58mm portafilters, including 54mm Breville models, ensuring versatile compatibility for various espresso machines. Designed with a 30lbs constant pressure system that provides uniform compression of coffee grounds, promoting balanced extraction for consistent flavour. Features a calibrated double spring mechanism that sustains stable pressure, averting both over-tamping and under-tamping during operation. Offers comfortable handling with an ergonomic structure, minimising hand fatigue even during repeated use for multiple espresso shots. Displays a smooth surface that facilitates easy cleaning; simply wipe away coffee residue to keep the tamper ready for your next brew.