Am Tech Tools offers a 3 year warranty on selected products via registration on their website. Titanium nitride coated bits last longer than regular steel countersink bits Set includes sizes 8, 10, 12, 16 and 19mm Effective 5 flute 115° countersink design Suitable for use on wood, plastic and most ferrous/ non-ferrous metals 6mm diameter shanks In Stock Ready For Despatch .
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