29/64" Carbide Tipped Taper Length Drill Bit. Carbide tipped taper length drills feature heavy-duty construction and heat treated body for optimum wear and resistance and support of the carbide tip. Particularly advantageous when length longer than jobber length is required. Used in production drilling of cast iron, non-ferrous metals, and many composites. Tanged shank allows for use with ASA split sleeve drivers. Not recommended for drilling steel '-- While we are happy to sell this product in any quantity you desire, we prefer this item be purchased in multiples of 6 in order to not break product packaging.