Abstract: A billiard cue has a shaft consisted of a first section and a rear section, wherein the rear section has a chamber. A bar is provided with a thread thereon and a stem at an end thereof. A weight adjuster has two first weight devices and second weight devices. The first weight devices each has a thread hole to be screwed onto the bar and the second device has a through hole to be fitted onto the bar and rest between the first devices.

Abstract: A billiard cue bag includes a main bag body, a cover part, and a cover locking device. The main bag body has a top portion that defines an access opening. The cover part is hinged to the top portion of the main bag body, and is movable relative to the main bag body between closed and open positions for closing and opening the access opening, respectively. The cover locking device includes a rotatable fastener unit mounted on the main bag body, a retaining flap connected to the cover part, and a lock body connected removably to the fastener unit. The fastener unit includes an elongate base part, an elongate rotary part, and a lock retaining flange that is formed with a shackle engaging hole for removable retention of a shackle of the lock body.

Abstract: A billiard cue bag includes a main bag body, a cover part, and a cover locking device. The main bag body has a top portion that defines an access opening. The cover part is hinged to the top portion of the main bag body, and is movable relative to the main bag body between closed and open positions for closing and opening the access opening, respectively. The cover locking device includes a rotatable fastener unit mounted on the main bag body, a retaining flap connected to the cover part, and a lock body connected removably to the fastener unit. The fastener unit includes an elongate base part, an elongate rotary part, and a lock retaining flange that is formed with a shackle engaging hole for removable retention of a shackle of the lock body.

Abstract: A billiard cue includes a shaft section, a bumper, and an assembly of a butt section and an extender segment connected to the butt section and formed as a transparent hollow shaft. The assembly is disposed between and is connected threadedly to the shaft section and the bumper. The extender segment includes a first end wall, a second end wall opposite to the first end wall in a longitudinal direction, and a tubular surrounding wall that extends between and that is connected to the first and second end walls so as to confine a compartment.