C12B-1 roller chain with straight side plate: 1, Material: 40Mn 2, Color: Natural 3, The ... many models C12B-1 roller chain with straight side plate' specification:1, Plate material: 40Mn; Pin: 40Cr; Bush and roller: 10 ... # steel2, Pitch: 15.875mm; Plate thickness: 1.70mm; Roller Diameter: 10.16mm3, Color: Natural. blue ... 50 days. C12B-1 roller chain with straight side plate