8" x 12-1/2" Power Trowel Superior Combination Blade Blue with bar mount is 30% thicker and will last 25% longer with fewer blade changes. Made to precise specifications for extended life and best performance. The 8" x 12-1/2" Superior Power Trowel Combination Blade Blue comes in (4 Pack). Fits on Boren, Husqvarna, and Superior machines Trowel Machine Blades for sale in 4-Pack.