Progressive. Saw blade with tungsten carbide teeth for electric tiger saws. Tungsten carbide teeth for a long service life and for cutting the hardest materials. Individually ground teeth for high flexibility and cutting capacity for the most demanding demolition work. Progressive tooth pitch for both thick and thin materials. Extra thick for optimum stability. Suitable for cutting wood with nails, steel and metal sections. Supplied in SB packs of 1 or 3 blades.