Winter Replacement Belt and Bottom Roller Kit for Van de Graaff Generator Subject_Physical Science German pattern brass cork borer

German pattern brass cork borer set includes 6 sizes from 4-10mm for creating precise holes in cork and rubber stoppers

polished and ground for image-formation and refraction demonstrations in physics

sized to fit tight laboratory frames while carrying heavy loads

Visualizes ocean circulation by linking two transparent tubes with warm and cold colored water

Winter Replacement Belt and Bottom Roller Kit for Van de Graaff Generator Subject_Physical Science German pattern brass cork borerWinter conditions Van de Graaff replacement kit pairing a 2. 5x14. 375 inch rubber belt with a more conductive bottom roller, recovering electrostatic output when low humidity stalls the standard.