This is a solid, easy-to-use chain drive for a Campagnolo 11-speed chain, which comes with the rivet peening function you need and also, as a bonus, four spoke wrenches.
When you put a Campagnolo 11-speed chain on your bike, you first press the connecting rivet (or 'pin' if you prefer) into the link, snap the end off, then you have to 'peen' it – flatten the end off a touch by squashing it down to prevent chain failure. This last bit is something that you don't have to do with a Shimano chain, for example.
Joy of joys! the Park CT6 chain tool is back, updated to version 6.2. Park stopped making it for a while because of the cost of stainless steel, but now you can once again own one for the princely sum of £20 (a bit less if you shop around). And I'd suggest that you seek one out, because it's a gem.
Now this looks neat, a compact chain-tool that could be discreet enough to hide in a seat-pack but sturdy enough to be genuinely worthwhile if anything goes wrong on the road, with the handy selling point of having a life-saving split-link compartment hidden in the body with actual split-links in it. Plus it's from the chain-meisters Wippermann so they should know what they're doing, especially as they're (national stereotype alert) German.
Looks can be deceiving.