tender for tungsten carbide circular saw blade for bosch hand circular sawmachine,specification- outer diameter-180 mm, bore diameter -25.40 mm, borereduction ring-20 mm width of cut (b1) mm/ base bl. thickness (b2) mm- 2.6/1.6, number ofteeth- 40, tooth shape- atb, part no.-2 608 644 278, make- bosch or similar .