... suction cup 1.Quality certificate:ISO:9001:2000 , SGS 2.good quality,quickly supply 3.open mould base on drawing Size rubber suction cup ... according to customers' drawingMaterialEPDM, NR, SBR, NBR, Neoprene, ... Partstainless steel, zinc coated metal, etcTechnologymouldingRemarks: how to choose the material, every material has its advantage, ...