Holemaker Bi Metal Holesaw 108mm Dia. AVUM 04SK C1745 1 1 8 to 3 16 in TLA312 C1745 1 1 8 to 3 16 in Shaft 20C1745 2 3 16 to 1 4 in Shaft 20C1745 3 1 4 to 3 8 in Shaft 20C1745 4 5 16 to 1 2 in Shaft 20C1745 5 3 8 to 1 2 in Shaft 20C1745 6 7 16 to 3 4 in Shaft 10C1745 7 5 8 to 7 8 in Shaft 10C1745 8 3 4 to 1 in Shaft 4 9 Piece Set Includes:• 1 x UN100 022 22mm (7 8 )• 1 x UN100 025 25mm (1 )• 1 x UN100 032 32mm (1 1 4 )• 1 x UN100 038 38mm (1 1 2 )• 1 x UN100 044 44mm (1 3 4 )• 1 x UN100 054 54mm (2 1 8 )• 1 x UN102 125 11 32 Arbor• 1 x UN102 140 7 16 Arbor• 1 x UN102 145 Arbor Thread Adaptor Suitable for drilling a wide range of materials including steel aluminium brass cast iron plastics & wood The M42(8% Cobalt) high speed steel teeth offer optimal cutting life & performance