Charge collecting belt suitable for use with the following Van de Graaff Generators:B8H26710 - Philip Harris Van de Graaff Generator - Hand DrivenB8H26758 - Philip Harris Van de Graaff Generator - Motor DrivenDimensions:Circumference: 750mmWidth: 50mmThickness: 2.5mm*This item is a charge collecting belt only and does not include the Van de Graaff*