Scosche's BaseClamp line of premium mounts were designed with the goal of achieving the most flexible, low profile mounting solutions that even the most critical Powersports enthusiast would appreciate. Performance and ergonomics were considered throughout every step of development. All BaseClamp's feature the highest quality materials such as 6061-T6 Aerospace grade aluminum, high performance UV resin coating and stainless steel hardware. Through creative design and stringent testing we have developed the modular “mix and match” BaseClamp system with many unique features that allow you to create the mounting solution you want to fit your vehicle. First pick your “Base” such as a “Mirror” base, a “Fire Extinguisher” base, “Grab Handle” base or choose from many others then you select the “Clamp[s]” to secure the “Base” to the bar or rail on your vehicle. There are 6 Clamp sizes available to fit bars or rails from 1.5” diameter up to 2” diameter..