for 3.5" ID Hoses feed_Carbon Fiber Intake Elbow Special tight-weave aramid reinforcement handles

Special tight-weave aramid reinforcement handles more pressure and can last longer than other brands

and then the 4" intake tube fits in the hole

Recommended clamps are 94100-0412 on the small end and 94100-0438 on the big end

and then the 2-1/4" intake tube fits in the hole

Very attractive appearance

for 3.5" ID Hoses feed_Carbon Fiber Intake Elbow Special tight-weave aramid reinforcement handlesThis constant torque clamp can be used on all types of 3 1 2" ID intake hoses. It is recommended in any air to air application or any application using silicone hoses. The "constant torque" feature of this clamp assures a firm hold, regardless of the expansion and contraction caused by changes in temperature and pressure. All stainless.