A variable pitch tooth pattern for efficient dust cleaning and gives superior cutting performance in wood, plastic, non-ferrous metals and man-made boards. Arbor to Suit AA4, AA1, SDSA1 Cutting Depth mm Wood - 38mm, Thin Sheet Metal - 3mm Description A variable pitch tooth pattern for efficient dust cleaning and gives superior cutting performance in wood, plastic, non-ferrous metals and man-made boards. Material M3 Grade HSS Steel Max Cutting Depth mm 38 Pack Dimensions L x W x H mm 39 x 84 x 146 Pack Weight kg 0.055 Product Code HS21 Saw Dia. mm 21.0 Substrates Softwood, Plywood, MDF, Plastic, Non-Ferrous Metals, Plasterboard, Thin Sheet Metal Teeth Pitch mm Variable Thread Mount inch Thread per Inch 20