I bought two of those, one for the seat bag on both road bikes. I also made one for the shop out of an old electrical tool. The tips were already thin enough to go inside the chain so all I had to do was file a small circle on the insides for the chain links. Really works good, but I wouldn't want to carry it with me on the bike. The squeeze link tool is perfect to put in the same little bag I carry my CO2 tool and cartridges.