The Knodos Blind Shaker is designed to declump and distribute ground coffee before tamping. Its magnetic base holds the shaker on the portafilter during use.
Sizes and compatibility
58mm: for E61, Gaggia, Sage Dual Boiler and Oracle machines, among others.
54mm and 51mm: a 2-in-1 shaker with separate rims for 54mm and 51mm portafilters