This must be for a Type A or C filter. We have a Type B filter and it is way too small for our filter. Wish there were measurements in the description. I opened the file in studio and trusted the measurements that slicer gave me and then measured my pump. Thought it was ok and printed. Printed on A1 with PLA. Printed flawlessly. Just not designed for my pump and no room on the build plate to scale up. Super bummed as I thought I would be able to clean the filter without needing help from the husband. Overall great object and great concept. Edit: Wrench has an inside diameter of 6 inches or 153 mm.