Feature: 1. MAIN USES: This billiard cue straightness detector is mainly used to detect the straightness of the cue so as to adjust the direction in time. 2. APPLICABLE OBJECTS: This billiard cue straightness tester is mainly used for billiards, billiard cues, cue testing tools, perfect for playing billiards, a perfect tool for checking the straightness of billiards cues. 3. SMALL AND LIGHTWEIGHT: This billiard cue straightness testing product is small and lightweight, easy to carry and store. Comes with a storage bag, easy to store and carry. 4. DURABLE MATERIAL: This straightness checker is made of selected stainless steel, wear resistant, not easy to damage, durable, ensuring a lasting performance. 5. APPLICABLE OCCASION: This billiard cue straightness detector can be used not only for playing billiards at home, but also in billiard halls, billiard clubs and other public places. Specification: Item Type: Pool Billiard Cue Roller Material: Stainless Steel. Package List: 2 x Cue Straightness Checker1 x Storage Bag