Edco 8" x 16" Power Trowel Combination Blade. Edco Power Trowel Replacement Combination Blades are made of Heavy Duty Steel to exacting specs. Each Blade is designed for longer life and greater performance. Fits Edco 42" Power Trowel Machines. If you need your Edco Power Trowel Blades expressed next day or second-day visit Fast Ship Tools Edco Power Trowel Blades.