A student of mine just brought me back a set of them from the phillipines made of phillipine ironwood. Also he brought back a set of kali sticks. this is a very strong and heavy wood. sticks are about 6" and the chain is 7 1/2". Having many years of practice with nunchuka, there are many differences in use of these, but also alot of similarities. one thing about the chain version i have though makes them work real nice for disarming weapons almost like a manrikigusari and using them for take down manipulation. If you can get a set they are different, but worth a try if you are an avid nunchuka enthusiast.