This simple little adapter lets you screw your favorite compatible dildo onto your desired sex machine! Vac-U-Lock adaptable and versatile, just plug into the base of your favorite vacuum seal dildo and screw onto select LoveBotz f*cking machines. Durable and easy to use, this small accessory will let you customize your sex machine so you can find your ideal size and shape to drive you wild! Measurements: 2 inches in length, 1.05 in width, threads measure 0.55 inches in diameter internally. Material Plastic. Color Black. Note: Compatible with the XRAD351, XRAD117, XRAC926, XRAB865, and other similar LoveBotz machines.