This 1/2" thick adaptor plate is made with High Density Polyethylene specifically engineered for marine applications. This plate will fit the H- rails on your 2019+ Outback and allow use of both rails to create a stable platform for your Scotty mount for your rod holder, snare trap pulley system, or Lake Troller Downrigger. Will fit Scotty 241 Mount or Scotty 244 Mount. Includes 1/2" Adaptor plate and hardware for mounting a 244 flush mount. All hardware 316 stainless steel!