Compared to the Shimano equivalent master link, this is about a third the cost. The manufacturer of this product says it can be re-used 5 times. Shimano says their master link can't be re-used at all. So, if all you care about is cost, then this master link is the way to go. I've used this master link for about 500 miles and I can't tell the difference between it and the Shimano equivalent. Of course even a single failure would negate any cost savings. Only time will tell.
