High speed steel , Bi metal ,Variable pitch tooth Universal holesaw kit containing one of each: 16mm , 20mm , 22mm , 25mm , 32mm , 35mm , 38mm , 44mm , 51mm , 64mm , 70mm , and 76mm 1 x Extension 12in / 300mm 1 x 3/8in Hexagon arbor 1 x 7/16in Hexagon arbor 1 x Arbor adaptor Supplied in a sturdy Aluminium case.
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