Shurjoint Grooved-end fittings are produced from bronze castings. Bronze castings are produced from lead-free C83470 copper alloy per ASTM B584. Materials are UL classified in accordance with NSF/ANSI 61 and NSF/ANSI 372 for portable water use. Shurjoint fittings are designed for use with Shurjoint CTS couplings, components and ASTM B-88 roll grooved copper tubing type K, L, M and ASTM B-306 DWV.