Weight Core 4,500 grams 245 mm weighs 4,500 grams and measures 60 mm in diameter by 245 mm in length. Weight Core 245 mm fits weight shell number 79-652. Used for FHS 461 chain movement chime side. Used for FHS 461 cable movement for time and strike side. Used for FHS 471 chain and cable movement time and stirke side. Used for FHS 1161 cable movement time and strike. Used for 1171.050 chain, 1171.850 cable movement time and strike.