Yes, those are the tools. Measure right at the top of the cylinder and then measure 1/4 inch down. They sell a ridge reamer to remove the ridge. They are expensive. For this small cylinder, get a wood dowel, 1.250" measure the cylinder length and cut the dowel 3/16 - 1/4 inch shorter. Place that dowel in the cylinder. Take another piece of wood dowel and tape a fine grit waterproof sand paper to it, ( I use 400 - 600 grit). Set it in the hole resting on the wood dowel, with the crown you should just be at 1/8 of an inch in the cylinder. rotate the cylinder a few times to clean the ridge off.
If you really want to be elaborate you can drill a hole in the bottom of the wood dowel and add a threaded insert and bolt so you can adjust the height. If you have some old fork head bearings you can cut a groove in the top of the two dowels and oil it and put the bearings in there for the dowels to roll on. Add tape to the side of the dowel to make it fit snugger in the cylinder. My homemade tool!
I use this to clean up cylinders where people have beaten the piston out of the cylinder and distorted the top of the cylinder. wish they would use liquid wrench and let it sit overnight.