6" x 14" Power Trowel Blue Finish Blade is made of heavy-duty steel 30% thicker than standard blades and has a 25% longer life with fewer blade changes. The hard thick steel cuts down on blade changes on the job creating a longer life and greater performance than standard blades. A finish blade is used at high speeds at a slight angle to create a strong, hard, shiny surface. The 14" x 6" blue blade fits most 36" machines. Trowel Machine Blades for sale in 4-Pack.