Aluminum Shock Mount (3 Positon, Steel Rotating Clevis mount). 5/16" holes for mounting. **Now sold with New adjustable shock clevis. **Pit Stop USA offers PPM Rotating Shock Mount (3 Position) 2042R at low everyday prices. Be sure to check out all of our products from PPM Racing Products including PPM Racing Products Birdcage Shock Mounts and PPM Racing Products PPM Billet Aluminum Birdcages and PPM Racing Products Shock Mounts.