Dual Seal Clamping Systems are constructed entirely from 6061 aluminum and provide leak-free Modular connections that are capable of withstanding up to 800psi of boost pressure and temperatures up to 400 deg F. This clamp design is ideal for turbo intake charge piping. It enables enough flex and is boost proof in comparison to the traditional silicone couplers. Available in 3.5'' and 4''. Sold Individually.