Description:Material: This Archery Arrow Spinner Tester is made of aluminum alloy and PE, ensuring high strength, great hardness, and durability.Convenient Design: The arrow tester is easy to use and carry around.Construction: The Arrow Straightness Scale Tool is integratedly processed and cut for wear resistance and durability.Feature:Arrow Straightness Tester has small resistance and smooth rotation.Product Details: Each package includes 1 Archery Arrow Spinner Tester .Specification:Material: Aluminum Alloy and PESize Chart:30cmx8cmx8cm/11.81inchx3.15inchx3.15inchPackage Includes:1 Archery Arrow Spinner TesterNote:Please allow slightly errors 1-2cm differences due to manual measurement.