Bar Mount Combination ProForm Troweler Blade Float and finish your concrete slab without changing blades. Heavy-duty blade is designed to provide even coverage when using ride-on or walk-behind power troweler machines. Each blade is made of heavy-duty steel to exacting specifications for a superior blade. Designed with a hard thick steel to cut down on blade changes on the job creating a longer life and greater performance than standard blades. The wide combination blade has upturned ends with a floating edge to push down aggregate and allowing water to come to the surface. Then complete the job to a strong finish. The 18" x 8", 0.074 in. thick blade fits most 46" and 48" machines.