Review on RK Racing Chain 520 SO 120 Connecting by Matt Watson

I played around with this before trying it on my new chain, my fingers couldn't get the cap far enough. I tried swapping the holes, thinking one might be smaller, but no matter how hard I tried, the lid wouldn't close. I thought it was just a tight fit so I started attaching it to the bike chain, now even with pliers and a c clip I could barely get the beginning of the line to show where the safety clip went. It was fun removing the cover, my flathead screwdriver slipped out and I cut my left palm. I took this part off the chain today and ordered it elsewhere. I could get this product to work if I used a dremel drill bit to enlarge the holes, but I don't want to interfere with what's holding my chain together.