Betalent carbide pilot drill bits are made of selects precise h6 ground carbide rods ( the carbide grade is selected according to the workpiece hardness and toughness), the flutes, angle and chip removal grooved well designed by professional engineer, and manufactured by 5-axil Walter grinding machine, which ensure the good performance of the drill bits. There are 60degree tip angle, 90° and 120° for general application, among them, large quantity of 90° pilot drill bits are stocked in Betalent carbide warehouse for a quick delivery.
|d Cutting dia.(mm)||D Shank dia.(mm)||Lc Cutting length(mm)||L Overall length (mm)|