Kirby Morgan Neoprene Neck Ring Assembly (For KM-17K, KM-37, KM-37SS, KM-57, KM-77, KM-97) Size:Extra Large Neck Ring 1 510-481 O-ring

Neck Ring 1 510-481 O-ring 2 510-550 Valve

Kirby Morgan 525-356 SL 17C/K

the user must have a clear understanding of the concepts and procedures to be taught in this class

It is mounted in a suitcase style hard case

Kirby Morgan Neoprene Neck Ring Assembly (For KM-17K, KM-37, KM-37SS, KM-57, KM-77, KM-97) Size:Extra Large Neck Ring 1 510-481 O-ringThis Kirby Morgan neck ring assembly comes with a neoprene neck dam and is used in the KM 17K, KM 37, KM 37SS, and KM 97 helmets. Options: 505 745 Small Neoprene Neck Ring Assembly (For KM 17K, KM 37 SS, KM 57, KM 77, KM 97) 505 746 Medium Neoprene Neck Ring Assembly (For KM 17K, KM 37 SS, KM 57, KM 77, KM 97) 505 747 Large Neoprene Neck Ring Assembly (For KM 17K, KM 37 SS, KM 57, KM 77, KM 97) 505 749 Extra Large Neoprene Neck Ring Assembly (For KM