Immunity Steel™ Pumice Cup, Modified Immunity Steel™ Pumice Cup, Modified PCUPM Used to hold prophy paste or medicaments. Made of corrosion resistant, acid-proof stainless steel. Where to Buy x Category - Any - Dealer Partners Sales Representative Strategic Markets Schools Representative Accutron™ Equipment Sales Zip Code Find Representative Reset No results found. Please try a different search or explore: Sales Representatives | Dealer Partners | Strategic Markets | Schools | Accutron