This adjustable coffee powder levelling tool is designed for use with a 58 mm portafilter. It helps create a consistent distribution of the coffee powder in your portafilter, which contributes to a more stable extraction process. The tool's adjustable function allows you to customise the depth for different amounts of coffee. An even surface of coffee powder is beneficial for achieving a balanced flavour in your espresso. This tool can be seen as a useful piece of espresso accessory for those who want to optimise their coffee brewing. It is compatible with most 58 mm portafilters, including the Rocket Espresso portafilter, and is a versatile Rocket Espresso accessory.