Precision CNC machined from billet aluminum. Very light weight. A section of hose is needed to attach carb (not included). Adapter is 2" in length. Hose mounting surface has a 1 9/16" OD. Drilled and tapped for a pulse fitting to run your fuel pump. Pulse fitting and two mounting bolts included. DuroMax and LCT Powerhorse customers need to use the stock carb insulator with this adapter.