Fits all model Mazzer dosers. If your spring is breaking frequently, you may want to consider picking up a new complete plate assembly. After time the lever wears out the aluminum of the plate where the lever pin goes through, causing the lever to wobble vertically. This puts excessive tension on the spring, causing them to snap.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.