There is a snap ring at the back of the clutch driven, but it was able to be taken with one shot with KTC pliers. I thought that the diameter of the hole was narrow, but I bought it was the correct answer.
I used it to exchange bearings with O / H of the brush cutter gear case. The snap ring of the bearing part of the drive shaft was quite deep so it was useful. The tip of the product was thinner than I thought and the strength was a little worried, but it was not a problem, it is recommended.