Ronstan Split Ring - 10mm 3/8" Diameter. . Formulated by using some of the very most durable and dependable materials around these Anchor & Docking through Ronstan will provide you with a product that gives you many years of stability. Ronstan has been making high-quality products for a number of years and the Ronstan Split Ring is their way of revealing just how much they care. At OpticsPlanet we make it our obligation to get the best product for your requirements and featuring the Ronstan Split Ring is one thing that we're delighted to offer. Specifications for Ronstan Split Ring: Manufacturer: Ronstan Color: Black Package Contents: Ronstan Split Ring Ronstan RF113: Split Ring - 10mm 3/8" Diameter