MHW-3BOMBER Astra Bottomless Portafilter (54/58mm)

Unleash True Espresso Clarity with the MHW-3BOMBER Astra Collection Bottomless Portafilter

Experience a new level of precision and consistency in your coffee workflow with the MHW-3BOMBER Astra Collection Bottomless Portafilter—a professional coffee tool engineered for serious coffee enthusiasts, specialty coffee shop owners, and home baristas alike. Designed to reveal the true beauty of espresso extraction, this bottomless portafilter is a must-have addition to your specialty coffee gear, offering both functionality and style for those who demand the best from their coffee equipment.

Engineered for Barista Excellence

This bottomless portafilter is part of the renowned Astra Collection, celebrated for its classic aesthetics and innovative features. Whether you’re dialing in your grind, perfecting your tamp, or mastering latte art, the MHW-3BOMBER Bottomless Portafilter provides clear visibility of your espresso shot, allowing you to diagnose channeling, adjust technique, and achieve flawless extractions every time. Its compatibility with multiple machine sizes—including 58mm (E61/Lamarzocco), 54mm (Breville), and 51mm (Delonghi)—makes it a versatile choice for a wide range of professional coffee tools and espresso accessories.

Key Features for the Discerning Barista

• Precision Filtration Holes: Boasting approximately 632 ultra-fine (0.30mm) perforations, the filter basket ensures even extraction and minimizes fine coffee grounds in your cup, resulting in a cleaner, more flavorful espresso.
• Premium Metal Construction: Crafted from high-quality SUS304 stainless steel and aluminum alloy, this portafilter is built for durability, corrosion resistance, and long-term performance in busy café or home environments.
• Ergonomic, Detachable Handle: The smooth, waist-style handle offers a comfortable, secure grip for extended use and is easily detachable for convenient cleaning and storage.
• Multiple Size Compatibility: Available in 58mm, 54mm, and 51mm options to fit popular espresso machines including E61, La Marzocco, Delonghi, and Breville (see compatibility notes below).
• Electroplated Black Finish: The obsidian black color, achieved through advanced electroplating technology, enhances both the visual appeal and the resistance to oxidation and corrosion.
• Workflow Optimization: The open-bottom design lets you monitor extraction in real time, making it easier to refine your tamping and distribution techniques with WDT tools, tampers, and other barista tools.

Materials & Craftsmanship

Every element of the MHW-3BOMBER Astra Collection Bottomless Portafilter is selected for precision, durability, and purposeful design. The basket and body are constructed from food-grade SUS304 stainless steel, ensuring safe contact with your coffee and resistance to wear, while the handle is made from robust aluminum alloy for a balanced, comfortable feel. The sleek black finish is not just stylish—it’s engineered to withstand daily use and frequent cleaning, maintaining its premium look over time.

How to Get the Most from Your Bottomless Portafilter

• Preparation: Use a quality coffee grinder to ensure a consistent grind size. Distribute grounds evenly with a WDT tool or distribution tool for optimal extraction.
• Tamping: Apply even pressure with a tamper to create a level coffee puck, reducing the risk of channeling.
• Extraction: Insert the portafilter into your compatible espresso machine and start the shot. Watch the extraction closely—adjust grind and tamp as needed for perfect results.
• Cleaning: Detach the handle for thorough cleaning. Rinse the basket and body with warm water after each use to maintain flavor purity and performance.
• Recommended Dose: For best results, use approximately 18g of coffee (adjust based on grind and roast).

Dimensions, Compatibility & More

• Overall Length: Approx. 235mm
• Diameter: 80mm
• Weight: About 475g
• Available Sizes: 58mm, 54mm, 51mm
• Color: Obsidian Black
• Compatibility: Fits E61, La Marzocco (except KB90/Linea Mini), Breville (except Bambino Plus/Bambino BES450), Delonghi (not La Specialista), and more. See full compatibility notes in the specification table below.

Care Instructions for Long-Lasting Performance

• Hand wash with mild detergent and warm water after each use.
• Dry thoroughly before reassembly or storage.
• Avoid abrasive pads or harsh chemicals to preserve the electroplated finish.
• Minor scratches or polishing marks may occur with regular use—these do not affect performance or food safety.

What’s Included in the Box

• 1 x MHW-3BOMBER Astra Collection Bottomless Portafilter (selected size)
• 1 x Precision Filter Basket (with fine filtration holes)
• 1 x Detachable Ergonomic Handle
• 1 x User Guide & Care Instructions

Product Specification