Item Type:Archery StraightnessDetectorMaterial: Aluminum Alloy +PE Color: Blue Applicable: For ArrowsSize:Length: Approx. 30cm/11.8in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1[Practical and Convenient] Archery straightness detector, used to determine archery straightness. Works with most types of arrows. 2[Premium Material] Made of high quality aluminum alloy, it is very durable and can also be used to test the balance of broad head. It is an essential accessory for archery. 3[Simple Operation] Place the rest of the archery on the probe and slowly turn the shaft with your hand. A good straight archery will hold steady. 4[Check Defects for Arrows] Make your own arrows and use archery straightness detector to check for defects before cutting lengths. 5[Rotation Again] Even after they have been cut and folded, the archery archery inspector are rotated again for inspection.