Bosch-2609255608-Hole-Saw-HSS-BiM-44mm-One-piece-Construction-with-Centre-Drill-Bosch-2609255608-This-Bosch-HSS-Bi-Metal-holesaw-combines-the-blade-and-centre-drill-as-one-part-making-it-run-with-less-vibration-and-more-precision-Suitable-for-aluminium-and-other-non-ferrous-metals-iron-and-steel-acrylic-wood-and-plastic-Bosch-2609255608-Hole-Saw-HSS-BiM-44mm-One-piece-Construction-with-Centre-Drill