Abstract: A bat made of metal material includes an opening defined in a distal end of the barrel and an inner threaded portion is defined in the opening so as to receive a cap which is threadedly connected to the inner threaded portion and includes a weight such that the users can replace different caps to adjust the weight center of the bat as needed. The cap can be easily replaced by using a securing tool which includes insertion portions to be engaged with axial recesses in the cap.

Abstract: A shock-absorbing device for a motorcycle comprises a tubular cushion made of soft materials and a cover body made of hard materials. The shock-absorbing device is mounted on the middle section of a motorcycle handlebar, whereby the recoil force by a bumpy road on the motorcycle will be transmitted and absorbed by the front shock absorbing springs as well as the shock-absorbing device of the motorcycle handlebar. Further, the two ends of the motorcycle handlebar are respectively provided with rubber handgrips; the trio forming a three-stage type shock-absorbing device.