Motorbike Chain Alignment Tool Aluminium Alloy Chain

Not something I would buy but better than using my eye, I have a single speed e Bike and getting a good chain alignment is quite important to help stop wear, normally I would use a straight edge but getting the chance to try this out I could not say no.
The little clamp clamps on well and the rod is the same just slide it in and tighten the thumb screw, the chain should align with the rod, if not out come the spacers, but it looks like my eye line was good as the chain is straight.
Neat little tool that works.