This Sliding Rail Mount is designed to fit the Upper Rubber Gunnel Rail on all Alumaweld open boats. The Alumaweld Gunnel Rail Slider will also work with any other boats that use a Rubber Gunnel Railing System that measure 1-1/4” Wide x 2” Tall. This Mount is made from Marine Grade Aluminum and has a Black Powder Coated Finish. This Sliding Rail Mount has 4 mounting holes that will accept, Folbe, Scotty, Cannon, Fish-On, and Cabela's Brand Rod Holders. This mount also works perfectly with all Fish Fighter Rail Mount Accessories. We also include (4) additional stainless-steel screws so you can easily mount your Rod Holders directly to the Alumaweld Gunnel Rail Slider. We manufacture this item right here in Idaho USA and are damn proud of it. Note: Fish Fighter Quick Mounts will bolt directly to the Alumaweld Gunnel Rail Slider. Kit Includes: (1) Mounting Block (2) Rail Holders Includes (4) ¼” x ½“ Stainless Assembly Screws Includes (4) ¼” x 1” Stainless Accessory Mounting Screws