The Scotty Rail Mount Adapter 242 fits 7/8" & 1" diameter round rails, and 1" square rails. The Scotty Rail Mount Adapter 242 is ideal for mounting all Scotty post mount rod holders to certain types of railing. Works with a Scotty No. 241 side /deck mount and includes stainless steel fasteners.
Scotty mounts are great products...Really like the new quick release feature is really cool.
adapter work great for mounting scotty rod holders to my rails and comes at a very good price from ACK