Triangular shank step drill spiral groove
Structure: The working part has a multi-step design with spiral grooves for chip removal, and the drill bit has a triangular shank.
Material: Typically, carbide or high-speed steel (HSS) are utilized, with titanium coating applied to certain surfaces to increase wear resistance.
Design: Multiple apertures can be processed simultaneously thanks to the stepped diameter's gradual increase, and the spiral groove maximizes the chip removal path.
ITEM NO:YDS-0148
Size
4-12mm; 4-20mm; 4-32mm
