Discovery Bay Marine Gear, Two Piece Sleeved Gunnel Mount. Two-piece aluminum sleeved floor mount for 1-1/2" davit. Remove the bolts & gunnel mount and the 1/2" thick plate remains attached to boat. Includes one sleeved gunnel mount, one back plate and four 1/4-20 bolts and washers. Not included are the 4 flat head screws needed to mount plate to the boat (pre-drilled holes in plate).