Why would other than a brand name advertise? Some get all excited over the fact that a SRAM chain comes with a snap type link connector (I think the SRAM name for it is Power Link or something); this is generally as opposed to a replacement link pin like comes with a Shimano chain. You can use that type of snap link on other chains, including Shimano, and other manufacturers make them too, though, so it's not all that special. Generally just match the chain to the number of speeds on your rear cassette, as the more speeds the narrower the chain.momoe said:i just see adds for sram. never thought it was a brand name. my error. what i saw made it seem like a different type of chain. like the difference between disk and v brakes. maybe it had some superior advantage or something. anyway...thanks for the answer.