Recommended for high-pressure hydraulic oil line applications. Easy to route and to install in extremely tight areas. Exceeds ISO 18752 Grade B, SAE 100R19 and ISO11237 R19. Recommended Couplings: GlobalSpiral™ Couplings, MegaCrimp® Couplings, Stainless Steel B Couplings (-4 though -8), Stainless Steel S Couplings (-12 & -16).