Starrett DCH0400 Deep Cut Bi-Metal Holesaw 102mmThe Starrett Deep Cut Bi Metal Holesaws offer aggressive material penetration and kerf clearance. Improved tooth material for enhanced heat and wear resistance and greater product life. Ideal for solid materials or tubes with a wall thickness greater than 3mm. The large cutting depth improves cutting performance on tubes, particularly where there is a need to cut through both sides of the tube. Cutting Depth: 51mm. Starrett DCH0400 Deep Cut Bi Metal