Description For heavy duty applications. 300 series stainless steel for corrosion protection. Rolled edge to prevent hose damage. Turbo Hose Clamp – Also referred to a T Bolt clamp for its use of a bolted fastener to apply significant clamping force and uniform tension around the whole diameter of hose. Subject to significant turbo boost pressure, these clamps ensure air is delivered to the intake manifold without external leaks.