Vac-U-Lock Modular System Realistic 6" Dong. Take in all 6" of this realistic cock Vac-U-Lock attachment. The bulging veins, plush balls, and hand painted detail will have you falling in love! Vac-U-Lock Attachment Realistic 6" Dong. Solid realistic dong measures 5 inches - 6 inches long by 1.5 inches to 2 inches wide. Compatible with Vac-U-Lock Sex System. Made using phthalate free, non-toxic materials: Sil-A-Gel, PVC. Color White. Details: Circumference 5.34 inches. Dimensions 7.00 inches Length, 1.70 inches Width, 3.70 inches Depth. Insertable Length 6.30 inches. Vac-U-Lock Modular Sex System Attachment from Doc Johnson Novelties the Great American Toy Company.