The YakAttack Universal Mounting Plate featuring the LockNLoad Mounting System was designed for attaching just about anything, and is compatible with YakAttack MightyMounts, GearTrac, and most other kayak track systems from Scotty Fishing Products, RAM Mounts, and YakGear. This product is a DIY mount and you will be required to drill holes to mount something like a Humminbird PiranhaMAX 4 to the mounting plate. Since every install will most likely be different no extra screws, nuts, or washers are included, and it is up to the user to find their own hardware for this install.For FeelFree Kayaks, 3 Water Kayaks, and Jonny Boats you will need an adapter to be compatible. We offer the needed adapter in a single pack (AAP-1012) and a six pack (AAP-1012-6).This mount features a flat top plate with no holes perfect for attaching miscellaneous fish finders, trolling motor throttles, gun mounts, etc. Mounting plate is 6\