The best way to remove a flywheel. Just remove the nut, screw knocker on to the end of crank and smack with a hammer. No puller needed, eliminates cracked flywheels from pullers.
Approx 8" long and weighs 1 lb 6 oz
(note: knocker must not be fully seated against flywheel, leave at least 2 or 3 turns out)
GX120 to 200, 6.5 Chinese OHVs