saw blades in Hc(brazed tungsten carbide).The bores (d) include standard keyways 20 x 6 mm on bores d=60-70, and 12 x 5 mm on bore d=80 alternated teeth: to be used along and across grain on soft and hard wood, without falling knots. Suitable for dry wood.alternated teeth with chip limiting device: to be used along and across grain on soft and hard wood, with falling knots. Suitable for dry wood.high thickness alternated teeth: to be used along and across grain on soft and hard wood, employed as supporting saw blade.