Magnum Super Premium Left Hand Spiral Drill Bit. Hi-Moybdenum tool steel. 135 degree split point for fast penetration and accurate starting without center punch. Precision ground point, flutes, body, clearance and drill diameter. Body and clearance are gold surface treated for max lubricity. Idea for drilling broken studs. Overall Length: 3 1/2". Flute Length: 2 5/16". 3/16" Norseman Left Hand Spiral Drill Bit (92450)