Each pack includes 4 blades

Broken-in edges Impact resistant for extended wear in rough use

092 rugged blade that is 50% thicker than standard blades

The top portion adjusts the pin height based on the material thickness

Marmo TURBO Heat Welding Kit 36" x 4" Straight Arrow Serrated Groover with 1-1/4" Deep Bit Each pack includes 4 bladesTurbo Marmo Floor Welding Kit is the best values when it comes to getting started with Turbo Heat Welding Tools. The Turbo Marmo Floor Welding Kit comes with the Turbo Marmo Groover set. The Supreme Turbo Kit comes with the following tools: Turbo Round Tip 4 5mm Turbo Roller Guide for Leister Welder Turbo Marmo Groover set Turbo Plane with 2 blades Rubber Hand Groover with one blade Turbo Cove Groover Wire Brush Handle with one brush Stainless Steel