Crafted from premium aluminum alloy with an oxidized finish, this dosing funnel effectively prevents coffee powder splatter while rust-resistant and wear-resistant properties for long-lasting use. Lightweight yet, the aluminum dosing funnel adds minimal bulk to your coffee setup while streamlining the dosing process to reduce mess and waste. This magnetic espresso dosing funnel fits most 51mm portafilter handles, making it a versatile accessory for home coffee enthusiasts and café professionals alike. 51mm espresso dosing funnel features 4 enhanced 4mm strong magnets and magnetic beads, ensuring firm attachment to portafilter handles even when inverted for worry-free operation. The simplified structure of the 51mm dosing funnel leaves no hard-to-reach crevices, allowing for easy direct water rinsing to maintain cleanliness effortlessly.