Bosch HSS Bi-Metal Holesaw Set for Electricians x9 Pcs 2608580804 High speed steel holesaw set specifically for Electricians. It features the sizes used every day by Electricians and it comes in a sturdy plastic carry case. HSS Bi-Metal With 8% cobalt alloy for extreme resilience and long lifetime. For Drilling in steel and cast iron, structural steel, alloyed and unalloyed aluminium, bronze, copper, PVC, acrylic glass and wood. The cutting quality depends on the correct speed and the coolant used. FEATURES 9 piece holesaw set For the toughest demands Quickly and steadily through a wide variety of materials Designed to cut metal, mild steel, aluminium, plastic and plasterboard Progressive tooth strip for high cutting performance and fast chip clearance HSS bi-metal with 8% cobalt alloy for extreme resilience and long lifetime CONTENTS 1x 20mm (25/32\") HSS Holesaw 1x 25mm (1\") HSS Holesaw 1x 32mm (1 1/4\") HSS Holesaw 1x 38mm (1 1/2\") HSS Holesaw 1x 51mm (2\") HSS Holesaw 1x 64mm (2 1/2\") HSS Holesaw 1x 11mm Hexagon Socket Adaptor (Dia 32mm-64mm) 1x 6.35mm Hexagon Socket Adaptor (Dia 20mm-25mm) 1x Allen Key 1x Tough Carry Case