Features 1、Professional Cue Calibration: This checker uses 360 degree rotation to precisely measure and correct the straightness and concentricity of the cue, enhancing shot accuracy and consistency, helping players get into a professional level. 2、High Accuracy Bearings: Utilizing high purity bearing steel and precise dual wheel design, ensuring smoother and high speed rotation without lag. The unique high speed bearings not only protect the cue from damage but also provide long lasting durability. 3、Stable and Low Noise: Equipped with a hexagonal screw tightening system to ensure stable installation, minimal friction increases rotation speed while reducing noise, creating a quiet, efficient calibration environment. 4、High Front Low Backrest: Designed with a high front and low backrest to perfectly accommodate various cue tapers, easily adapting to and accurately correcting cues of any specification, assisting in bringing the cue to its optimal state. 5、Long Lasting: Sturdy, long lasting structure with easy maintenance. Whether a professional player or amateur enthusiast, this inspect tool can be your ideal partner in cue maintenance and skill enhancement, instilling confidence in every shot. Item Type: Billiard Cue Straightness Checker Material: Stainless Steel Package List 2 x Billiard Cue Straightness Checker