Knurled Grip for Gaggia Classic Pro Espresso Machine Steam Valve Knob

The stock steam valve knob on the Gaggia Classic Pro espresso machine is very glossy and slick. This makes it difficult to grip and control. This model is a simple ring with a knurled pattern that fits over the steam valve knob and is pressure-fit. It greatly improves the grip of the steam valve knob. It may also fit the original Gaggia Classic (non-pro model), however it has not been tested on that model.