1、WIDELY USED: Professional aluminum alloy spring tension calibrator is suitable for all brands of rackets, for tennis, badminton, squash, racket. 2、STABLE PERFORMANCE: badminton racket tension calibrator has stable performance, high resistance, easy to test tension up to 100lbs, practical to use. 3、ACCURACY CHECK: Ensure the accuracy of your tennis racket stringing machine. This tension meter allows you to check the stringing machine accuracy, offering reliable performance. This tension meter allows you to check the stringing machine accuracy, offering reliable performance. 4、PRACTICAL TOOL: The spring tension calibrator provides accurate and consistent readings for your tennis racket stringing machine, making it an essential part of your stringing machine toolkit. 5、ALUMINUM ALLOY MATERIAL: The badminton racket tension calibrator is made of premium aluminum alloy, which is sturdy, lightweight and long lasting. Item Type: Badminton Racket Tension Calibrator Material: Aluminum Alloy Measuring Tension: Maximum 100lbs 1 x Badminton Racket Tension Calibrator