... delivery 4.ISO 9001 Roller chain sprocket coupling KC seriesFlexible roller chain coupling Chain coupling introduction: ... model numbers: KC-3012, KC-4012,KC4014,KC-4016 KC-5014, KC-5016,KC5018,KC-6018,KC-6020,KC-6022,KC-8018 etc.Specifications ... :Product pictures: Standard roller chain sprocket coupling KC ...