Dormer A225 HSS Centre Drill (BS 328) for drilling components that require machining between centres. Has a 120° point angle with a 60° included countersink. Sizes BS1 Diameter: 1/8in Working length: 3/64in BS2 Diameter: 3/16in. Working length: 1/16in BS3 Diameter: 1/4in Working length: 3/32in BS4 Diameter: 5/16in Working length: 1/8in BS5 Diameter: 7/16in Working length: 3/16in BS6 Diameter: 5/8in Working length: 1/4in Image shown is an example only of a Dormer A225 centre drills.
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