Lance I'm not very good at diy as you can see by my attempt for this type of guttering. It's crude and quick to do but should reach & clear that type of guttering ok. The other one next to it is a 45 degree bend 51mm to 38 reducer so fit into to attempt to clear out the blocked downspout bends aswell.
If you are use a 135 51mm silicone bend the pop over sometime as I can give you some ali pipe to make a crevice nozzle. All you will need to do is cut it to the length you want and flatten the end in a vice to how big you want the opening to be.