Rupp Top Gun Bolt-In Outrigger Bases offer a quick bolt-in application using a 4'' x 6'' mounting flange. Rupp Top Guns offer ease of installation and below-the-top operation. Made in the USA the Rupp Top Gun line of products are the most widely used and recognized top mount outriggers in the world. Easy to use, easy to install and easy to service. Easily bolt Rupp Top Gun outrigger bases into any hardtop, T-Top or tower. If your boat is not ''outrigger ready'' easily add Rupp's Top Gun mounting plate (part# 17-1502-23).