Two patent-pending rigid couplings from ASC Engineered Solutions are now available that will revolutionize fire safety piping system installations.The new SPF Anvil Fig. C9-CL and Gruvlok Fig. FP74CL rigid couplings feature brand new Sabertooth™ Installation Technology, allowing for quick and accurate visual and tactile installation verification.FM Approved and UL ListedFM Approved and UL Listed, the Fig. C9-CL and the Fig. FP74CL offer the fastest and easiest grooved fire system joint