The Tamper Base Knock features a black silicone ring which enables you to gently tap it against the portafilter to shake the coffee grains back into the filter before tamping again. This will ensure that your portafilter will remain undamaged.
Espresso Tamper Base Knock
Material: Stainless Steel
Weight: 120-250g (depending on diameter)
Compatible with Joe Frex's full range of tamper handles.