This durable high quality mount will allow you to easily mount your Kill Light™ or other tactical flashlight to your favorite scope with 30 mm tube. This mount is also good for mounting a larger 30mm sized light or accessory to a 25mm or 1 inch scope tube. This mount is 25mm on ones side and 30mm on the other side. This mount also has a picatinny type rail on either side of the 30mm ring!