The lowest price component in this E-22-1 parts-list fiche is the Screw,tap.5x10.
A sample from the products for the E-22-1 include: Tube H,pb, Tube B,air Intake, Tube G,air Intake, Screw,tap.5x10.
On this parts fiche the Clamp D 12.0 Tube is the most specified component.