Heel Grounder Cup Style P/N: HGC1M P/N: HGC2M A full size, double life span sole combines with comfortable elastic velcro to make our Cup Style an industry favorite. Made in the USA, this quality grounder features a durable three layer sole, lot number, and multi-strand ribbon. Select a 1 meg (HGC1M) or 2 meg (HGC2M) resistor.