Bosch 2 608 837 689, Wood, 6.5" (16.5 cm), 1.18" (3 cm), 0.0394" (1 mm), 9500 RPM, 0.0591" (1.5 mm) Bosch 2 608 837 689. Suitable for materials: Wood, Blade diameter: 6.5" (16.5 cm), Bore size: 1.18" (3 cm). Quantity per pack: 1 pc(s)