DESCRIPTION:CHAIN BLOCKJS1610A: 0.5T/1.5mJS1610B: 0.75T/1.5mJS1610C: 1T/1.5mJS1610E: 1.5T/1.5mJS1610H: 2T/1.5mJS1610K: 3T/1.5mJS1610M: 6T/1.5m