Yeah, I use it on my HKK Vertex, it works a treat. Once I'd worked out that the screw went into the particular chain plate that was tapped to accept it and that the bolt was just to lock it in place it made sense. I nearly split the chain at the wrong end, and would have never worked it out. I at first thought it was just like a normal bolt that bolted through the link....can't see that would have worked for too long.