H Herr KW60/1M is a Hubert Herr 1 Day musical cuckoo movement with a pendulum length of 29 cm, a plate size of 2 11/16" by 3 1/16". H Herr KW60/1M requires 3 weights of 320 grams each and comes complete with bird rod, chains, stop rings, weight hooks, hand nuts & two posts for double door cuckoo.