●Our fast filler neck are made from 6061-T6 lightweight aluminum with hard anodized finish,Perfect for build your own fuel cell tank, replacing missing or damaged mounting caps etc. ●Fuel Cell Filler 12 Bolt Flange OD:5.5" (140mm); Fuel Cell Filler Neck OD:57mm ●Fuel Cell Filler Neck, Neck Cap and 12 Bolt Flange Material:6061-T6 Aluminum Alloy,12 Bolt Flange Base Material :Chrome Steel ●package:1pcs Black 45 Degree Fuel Cell Fast Filler Neck as picture shown ●Please Note: Our item only fits with the tank which have the same hole with our drawing. Please confirm clearly before placing an order.