This premium #50 drive chain replaces 116-6896 and 126-8807. The chain measures 30" with 48 pins/rollers, including a supplied master joiner link. Chain pitch: 0.625", Roller diameter 0.400", Roller width 0.375" Pin diameter 0.200", Plate thickness 0.080" and Tensile strength 6100 pounds. Fits models ARX541CKA30000 S/N 400,000,000 and up ground drive assembly, ARX541CKA30000 S/N 402,082,300 and up ground drive assembly, ARX541CKA30000 S/N 404,314,159 and up ground drive assembly.