Vac-U-Lock Modular System Stryker Realistic 9.5" Dong. Can you take 9.5" of pure bliss? This could be your favorite Vac-U-Lock Attachment! Jeff Stryker's smooth curved shaft. Vac-U-Lock Attachment Jeff Stryker Realistic Dong. Solid replica porn star mold. Realistic dong measures 9 inches - 10 inches long by 2 inches to 2.5 inches wide. Compatible with Vac-U-Lock Sex System. PVC polyvinyl chloride is one of the most widely used materials for adult products. Details: Circumference 5.97 inches. Dimensions 9.5 inches Length, 2.3 inches Width. Insertable Length 7.4 inches. Vac-U-Lock Modular Sex System Attachment from Doc Johnson Novelties the Great American Toy Company.