Espresso Magnetic Dosing Ring Aluminum Alloy

Snap on. Dose clean. No scatter, no marks, no mess.

The MHW-3BOMBER Espresso Magnetic Dosing Ring attaches instantly to the outer ring of your portafilter basket via 10 precisely positioned magnets — no threading, no pressure fitting, no alignment fuss. The flared upper opening catches every ground from any grinder, the bottom-hanging design maximises the full distribution area of the basket, and the smooth interior guides grounds evenly into the puck without leaving depression marks. Lightweight aluminum alloy at just 32g. Available in 51mm, 54mm, and 58mm.

Key Features:

• 10-Magnet Bottom-Hanging Attachment: Ten precisely positioned magnets clip securely to the outer ring of the filter basket — not the inner rim — leaving the full basket opening unobstructed. Stronger, more stable attachment than traditional press-fit designs, with instant one-handed placement and removal.
• Flared Upper Opening | Zero Scatter: The flared upper rim expands the catch area beyond the basket diameter — capturing grounds from any grinder angle without spillage onto the portafilter rim or bench. Every ground goes where it should.
• Full Distribution Area | No Depression Marks: The bottom-hanging design attaches below the basket rim rather than sitting inside it — preserving the full powder distribution area and eliminating the depression marks left by traditional dosing rings that press into the grounds. Cleaner puck surface, better tamp.
• Lightweight Aluminum Alloy | 32g: Precision-machined aluminum alloy construction at just 32g — rust-resistant, corrosion-resistant, and durable enough to withstand accidental drops without damage. Light enough to leave on the portafilter during distribution without affecting balance.