This motor mount is designed for the Old Town Salty kayaks. It comes in 2 parts which is a perfect fit for the PDL drive hole. The mount is not sealed, so some water can come from around the edges. 
It is designed to fit the shaft of a 1 inch trolling motor shaft. It will not fit any other motor shaft size (Minn Kota, Newport Vessels, etc have bigger shaft sizes).
This does not fit the regular Sportsman, Topwater, Predator, or Bigwater kayaks by Old Town.
This is for the mount only, not the motor.