If you want to buy a throwing stick, you must first have a short stick technique (I think Bruce Lee's short stick fighting technique is the most practical). Second; Length, weight and verticality; The stick must extend in a straight line, and the length is not necessarily limited to the wrist stripe to the armpit, which can vary from person to person. So is the weight. It costs 50CM to carry self-defense, and more than 65CM to practice sticks on tall buildings. The weight can be increased by four sections. Third, you should see if the stick can be locked. Fourth, it should be used for self-defense and fitness, not for fighting and making trouble. Fifth, it is best to buy cheap and affordable ones in China. Sixth, it is best to go to the local public security department.