Description Details Other Info HELLO BELLOWS Achieve even lower retention with every grind with the silicone series bellows from Introvert. Integrating perfectly into the funnel of the Niche Zero & Duo, the bellows converts the top of the grinder into a blower to help clear out retained grounds with each compression. Focused on utmost simplicity and effectiveness, Introvert's bellows are designed to complement the design and enhance the performance performance of the grinders for which they're made. Compatible with the Niche Zero & Duo grinders. FEATURES Achieve up to 0.0g retention, and keep your grinder cleaner between doses. Effortless installation, with no tools or grinder modifications required. Low profile design allows lid to close over top of the bellows while inserted into the funnel; compatible with or without the Niche Zero flow-control disk. Intuitive use, with each compression of the top of the grinder blowing air through the grind path to help clear any retained grounds. Smooth, flexible, durable and dust-resistant silicone is odourless and easy to clean. Designed with passion in Vancouver, Canada Made in Taiwan ABOUT INTROVERT Introverted by nature, coffee enthusiast and company founder, Andrew, is constantly observing and reflecting internally. Striving to infuse simplicity, efficiency, effectiveness, and a great user experience into their product designs, Introvert innovates in order to improve and enhance the workflow of people's everyday coffee routines.