Ronstan Series 15 Ball Bearing Utility Block - Exit Block. . Formulated using several of the very most sturdy and dependable substances available these Anchor & Docking through Ronstan will provide you with something that will give you numerous years of reliability. Ronstan has been generating high quality products for a very long time and the Ronstan Series 15 Ball Bearing Utility Block is their very own approach to showing you just how much they care. Here at OpticsPlanet we ensure that it is our obligation to receive the perfect product for all of your needs and showcasing the Ronstan Series 15 Ball Bearing Utility Block is a thing that we are delighted to offer. Specifications for Ronstan Series 15 Ball Bearing Utility Block: Manufacturer: Ronstan Color: Black Package Contents: Ronstan Series 15 Ball Bearing Utility Block Ronstan RF15711: Series 15 Ball Bearing Utility Block - Exit Block