The Double Trouble Adaptor for the F-Machine Pro and Gigolo. Transforms a single penetration fuck machine into a double penetration sex machine. This video guides you through installing the adapter. Screw the double trouble adaptor onto the end of the thrust rod. Screw the Vac-u-loc toy adaptors into the double trouble base and tighten with a 6mm allen key. Both toys can be moved up and down within the double trouble adaptor to allow for best positioning for the user. Slide both toys onto the adaptors. Your double Trouble is now ready to use on your machine. Watch the F-Machine Gigolo installed with two 8” black dildos, dual thrusting, ready to double penetrate.