Archery Arrow Spinner Aluminum Alloy Arrow Balance Straightness Detector Arrow Spine Tester Vane Tuning Archery Accessories Product Details Item Package Dimensions L x W x H: 12.09 x 2.76 x 2.48 inches Package Weight: 0.49 Kilograms Brand Name: Elkrich Material: carbon, fiberglass, aluminum alloy, aluminium Manufacturer: ZZYB Part Number: 01 Adopt good quality aluminum alloy material, exquisite design, this instrument can help to ensure a smooth and accurate flight It can check the shaft straightness, broad head balance and straightness, a necessary accessory for archery Put the arrow on the arrow straightness detector and slowly rotate the arrow shaft by hand, Arrows with good straightness, the arrow points will remain steady. Create your own arrows and use them before cutting lengths to check for defects. Even after they have been cut and folded, they are rotated again for inspection Great shooting accessories for all kinds of arrows, such as carbon arrows, fiberglass, aluminum arrows .etc Item name: arrow straightness detector Material: aluminum alloy Color: silver Main Function: 1.Feather and vane balance check 2.Check point and arrow for straightness 3.Broadhead balance check Size: 30*5.5*6.5cm Net weight: about 449g Package include: 1 piece