Sonic Tension Meter; 2 X AAA Battery; 160MM Height; 26MM Depth; 59MM Width; 10HZ to 5000HZ Measurement Range; LCD Screen Backlight; Double Display Possible; Flexible Sensor

Sonic Tension Meter; 3 Frequency; 10 to 50HZ Low Frequency; 10 to 1000HZ Standard Frequency; 900 to 5000HZ High Frequency; Neodymium Material

Coupler; 18 Teeth; 73MM Outside Diameter; 35MM Belt Width