Bajaj Sprocket Chain sets are made by Rolon which comes as an OEM part from Bajaj. If you want to use the O-Ring chain set, then no point in purchasing the Rolon as an aftermarket product. But if you want to increase durability then going to the Rolon X-Ring chain set is a good idea. I've seen the Rolon logo mentioned on the chain (you guys also verify the same on your Bajaj chains).