The CB counter bores 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.