^^ do the metric to english conversion and go see what your local O’Reilly’s has….this worked for VEN99 because they’re cup seals…if you have the new square O ring seals, you’re probably boned. Sorry! I have since sold the kart these were on, so I have the calipers just sitting here. Plus about 12 brake pads, mostly new. Make offer if interested. They probably need a light touch with reamer from machine shop to restore round and smooth and then the cup seals should work again…