Malibu Axis Wake Plug and Play Rear Sac – Part Number W032dimensions: 20 x 20 x 50 weight: 750 lbs. / 340 kg.Everything comes done for you with this custom rear compartment sac and the Axis Wake Research. The W736 fittings are already screwed into it where they go with pvc cement. Get two W740 and two W742 fittings and attach them to the end of the hoses that come in the Axis Wake Research and go plug & play.