7989 Edco Plastic Trowel Blades by Edco Plastic Trowel Blades For troweling epoxy mortars or terrazzo, eliminates steel carbon streaking Plastic Blades available in the combination style only Two sizes available 8″x11″ and 8″x14″ . Posted in Concrete & Masonry Tools, More Concrete & Masonry Tools, Power Trowels