OrangeA # 41 Steel Chain, SL1500 Long life chain will work on standard sprockets,will not work on ALEKO brand opener AC1400,AC2000 Standard roller chain meets ASME/ANSI B29.1 In standards agricultural and industrial equipment Will Work on LiftMaster CSL 24 V, Osco SLD,SLR. Eagle-1000, Eagle I, Eagle-1000 Dc. Will Work on LiftMaster RSL 12V, LiftMaster SL505, SL920, SL930, LiftMaster Mega Slide-X, Will Work Allstar LPX 1000. PowerMaster, CSG, RSG,Dorking 9050, 9070, 9100. Ramset 100 and 1000