The OVIS MTL Kit By RamMods is a great kit to convert your already existing OVIS RBA bridge into a MTL RBA section, the kit comes complete with MTL Cap, MT Insulator and 3x MTL Airflow pins 1mm, 1.3mm and 1.6mm. To convert your OVIS RBA Bridge To the MTL bridge is relatively simple, remove the chimney from the Original Cap and slot it into the MTL Cap, unscrew the Airflow pin which will also unscrew the post and insulator, replace the insulator with that of the MTL Kit, and screw in your desired MTL Airlfow Pin. Please note: Gold color will show Brass on the box this is due to it being 24k gold coated Brass.