If someone doesn't have the complete answer for you, this might be a useful starting point but you'll have to do some more research: the HF $29.99 compression test kit looks exactly like one TU-15A I bought from Aliexpress, except that the box is different. I had to get the short black injector adapter on LHS modified to suit my 15271-53020 injectors (M4500 with S2600 engine) which have M24x2.0 thread. The long black adapter on the RHS is M24x1.5 thread. I didn't try the glow plug adapters. (I've yet to use the tester - other things have been getting priority). If you need more measurements or info on my setup, I'm happy to help.