Screw the rod into your ass until the cylinder creates a seal around your hole! Attach your hose and pump and squeeze to increase circulation, making your tight little ring swollen and sensitive. Anal engorgement combines with penetration in this unique pumping accessory. Your anus will be sucked in, puckering out like a blooming rosebud! The swirling ridge on the anal shaft will add additional stimulation as you increase the size and sensitivity of your hole, but it can also be removed for use without. Both materials are non-porous, durable, and sanitize thoroughly with mild soap or toy cleaner. Avoid use with silicone lubricants.Measurements: Cylinder is 3.3 inches in depth, 2.5 inches in diameter. Beads are 7 inches in total length, 3.5 inches insertable, .95 inches at widest diameter, .7 inches at narrowest diameter.Material: Acrylic and siliconeColor: ClearNote: Compatible with pumps that use the same lock-in connector system, not included. An allen wrench is included for removing anal screw.