Leupold steel gloss base for H009 (.30/30) and H010 (.45-70) series rifles ONLY. For use with Leupold Standard rings ONLY which are sold separately. They can be purchased from a local dealer or a gun parts distrubutor like Brownells. Made in USA. Please contact the manufacturer with any technical questions on mounting. REFUND or EXCHANGE accepted for unopened, uninstalled bases ONLY.