14 spline design fits threaded plastic radiator cap on 2026 KTM models. 7 spline design fits 2025 KTM models. Both of these should also work on modern Husky and Gas Gas models as well. You can use it help get the cap off by hand or to make it even easier you can use a 19 mm Metric or 3/4” SAE socket on the top of the tool to make it even easier to get the cap off and back on
