Step Drill Bits 3/16" thru 1/2" - A great Step Drill Bit for electrical applications.Step Drill Bits 3/16" thru 1/2" features include: One Step Drill Bit allows you the flexibility to drill various hole diameters Self-starting point eliminates starter holes or punches Double-fluted design for balanced cuts, faster penetration, and cooler operation Use for metal studs, switchboxes, lighting fixtures, junction boxes, etc. All bits marked with sizes Step Drill Bit Automatically de-burs drilled hole Heat treated and tempered for maximum strength and life Dimension Measurements = Inches Order Qty of 1 = 1 Piece Below is more info on our Step Drill Bits 3/16" thru 1/2"