Gem Bids For Item# 1. Ceramic Foam Filters-10ppi-zr Zirconia 50mm Od+ 0/-3 Mm * 20mm Thickness+ /-1.5mm Sup, Item# 2. Ceramic Foam Filters-10ppi, Pszt Zirconia70mm Od+ 0 / -3 Mm * 20mm Thickness 1.5mmsupply