Pool billiard cue bridge head Package: 4pcs Color: black,white Material: plastic Size: 10x7cm/ 3.94x2.75Inch Net Weight:80g -lightweight bridge head slides over any pool cue, instantly converting it into a bridge rack. The bridge head provides 9 available shot positions. allowing you to customize the pool cue height and placement. -Easy installation and dismantle, and easily into your pool cue case or clothing pocket. -A bridge is typically used when using your hand as a bridge doesnt provide the optimal angle, or when a shot is too far for you to reach, the bridge is you best auxiliary tool.