Polaris PRO R Cage Bung Set Domed StylePerfect fit in your Polaris PRO R Weld on Perfect for your RZR cages 1. 75 OD . 120 wall thickness 2. 00 OD . 095 wall thickness C & D Pillar are domed bungs Sold as a set of 6 or 8 pcs Made in USA Our Polaris Pro R Cage bung sets are perfect to fabricate a custom roll cage. These bungs are designed to fit directly in the stock frame. We have designed our "A" Pillar mount with a wire hole. The "B" Pillar mount on the 4 seater uses our standard RZR