The Street Demon redefines the street carburetor with clean looks and ease of use! It offers enthusiasts a straight-forward carburetor designed to deliver a stable idle, amazingly crisp throttle response and smooth performance. Its optimized calibration and dual mounting pattern make it Run-Ready for a large variety of engines and vehicles! Available in Hand Polished, Tumble Polished or Tumble Polished with Aerospace Composite Bowl for significant heat insulating benefits. Get one today and experience Performance That's Out of This World. Features Assortment Of Metering Rods/Jets/Step Up Springs ASIN B00HHCAG0I Brand Demon Model Demon 1931 Street Demon Calibration Kit Exterior Machined Item Weight 0.8 ounces Manufacturer Demon Carburetion OEM Part Number 1931 Item model number 1931 Manufacturer Part Number 1931