1、Purpose: This billiard straightness detector is mainly used to detect the straightness of the club, so as to adjust the direction in time. 2、For Billiards: This pool cue straightness checker is mainly used for billiards, snooker cues, cue inspection tools, very suitable for playing billiards. 3、Small and Lightweight: This billiard ball straightness detector product is small in size and light in weight, so it can be carried around and easily stored. 4、Durable: This straightness detector is made of selected 6063 aluminum material, which is wear resistant, not easy to damage, and durable. 5、More Situations Applicable: This billiard cue straightness detector can not only be used for playing billiards at home, but also can be used in public places such as billiard halls and billiard clubs. 2 x Detector1 x Storage Bag Item Type: Ball Straightness TesterMaterial: 6063 AluminumGross Weight: 173g / 6.1ozProduct Size: Length: Approx. 6.7cm / 2.6in, Width: Approx. 2.1cm / 0.8in