Factory Spec, FS-530-OBLK, Heavy Duty Black O Ring Chain 530x150 ORing 530 X 150 (1) 530 x 150 o-ring chain (black) (1) Master link (clip style) Tensile strength of 8200 pounds O-ring style means it will last longer with less maintenance than conventional chains Factory Spec brand Stock photo is used - you will receive the length chain described