Kill 2 NM ram's in La Thaine Plateau and Konstact Highlands.
if you kill HNM ram's (Steelfleece and Bloodtear the drops are 100%)
NOTE: if your gonna level monk i suggest doing teh quest for this unless you wanna fork out 330k+(Odin 02/11/08) for Brown Belt at level 40. it is possible at level 30MNK with 2HR to kill the NQNM rams.