Hole saw, with integrated edge countersink, hexagonal shank and ejector spring, for wood and plasterboard, 68 mm Ø Hole saw with a diameter of 68 mm, featuring an integrated edge countersink, hexagonal shank and ejector spring: HSS bi-metal with Vario teeth, 11 mm hexagonal shank without driver, 105 mm centre drill, 6 mm diameter, ejector spring. Application: for wood and plasterboard: Size: 68 mm