Solid Carbide drill bits for Aluminum process Split point 135degree,no coating Dia14.5*flute length ... as you requirement.Type: Center drill,Spotting drill,Twist drills,Step drill,Core drill bit,Straight flute drill,Spade drill bits ... count on ZLY to deliverMachining: For metal working(such as Aluminum,copper,steel,stainless steel,cast iron etc ZLY company is ...