Double Trouble F* Machine Attachment. For the lady who simply cannot get enough of her machine, double trouble allows the user to install her two favorite Vac-U-Lock toys at once, for simultaneous pussy and ass penetration. Crafted from anodized 6061 CNC machined aircraft alloy. Designed to fit f-machine sex machines 10 mm thrust rod only. Adjustable toy position – pussy and ass separation. Utilizes 2 x Vac-U-Lock barbs 1 supplied originally with your f-machine and a second supplied in the double trouble kit (see picture). Please note: f* machine f*cking machine and Doc Johnson Vac-U-Lock toys are not included (for illustration purposes only). Please note the f-machine is not included. Sold separately. Do not operate the F-Machine while under the influence of drugs or alcohol. Do not use the F-Machine when pregnant. Double Trouble Attachment is packaged in a discreet plain brown box! Weight .50 Pound.