High performance through hole drill bits with hw integral body - 2 double-angle cutting edges

High performance through hole drill bits with shank in high densimet steel and super micrograin carbide HELICAL BODY and anti-splinter head sharpening FOR THICKNESS PANELS 20/30 MM ATTENTION D=3 WITH SHARPENING “V” POINT 60° - Z=2 : 2 double-angle cutting edges Z=2 : 2 double-angle cutting edges. - More gradual entry into the wood, thanks to the double angles which allows a clenaer hole at both entry and exit , with respect to a single-angle cutting edges bit - - shaft with fixing plate and axial adjustment screw