3/4" T-handle Drain PlugStandard 3 4" t handle drain plug for use in the bilge drain holes in the bottom of the boat. This will work with the drain hole near the v drive transmission and the forward situated drain hole by the walk through (not all models have both of these drains, some only had one of them while others had both). There were also some older Malibus that used a 1 2" drain plug for these drains just make sure to measure the diameter of your drain hole if you