Description
The CB counterbores are extensively used for recessing bolt and screw heads. Supplied with a HSS slow spiral drill bit. Fully adjustable, a hex key is supplied. TCT version is used for plywood, particle boards and plastics (abrasive). Use a drilling speeds only. Not suitable for ferrous and non-ferrous metals. When setting-up, ensure flutes of drill are aligned with flute of counterbore. For replacement Twist Drills, use slow spiral type e.g 501/532 to 501/012. Specifications • Dia Metric: 19.1 • Dia Imperial: 3/4 • Dia2 Metric: 6.35 • Dia2 Imperial: 1/4 • Overall Length Metric: 96 • Type or Grade: TCT
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