Porter Cable 18682 1/4 Inch - 3/4 Inch 9-Step bit Description:

Porter Cable 18682 1/4 Inch - 3/4 Inch 9-Step bit. Drill holes into stainless steel, mild steel, cast iron, plastic, and wood up to 1/8-inch thick, quickly and cleanly with this step drill bit. The stepped design allows one bit to drill more than one size of hole, saving trips to the toolbox and eliminating the need to change bits.  The double flute design allows it to cut twice as fast as conventional step drills and it resists heat build-up and wear. 

Porter Cable 18682 Step Bit Features:

• Stepped design eliminates the need for multiple bits--drills 1/4- to 3/4-inch holes
• Double fluted for faster cutting and longer life
• High-speed steel construction for a clean, burr-free hole
• 135-degree starting point requires no center punching
• Drills materials up to 18-inch thick including stainless steel, cast iron, plastic, and wood
• Three flats on the shank provide a slip-free fit into drill chucks.
• A 135-degree tip starts holes quickly so no center punching is needed.
• It can also enlarge holes because no center is needed to stabilize the bit.
• It is constructed from high-speed steel and has a steam oxide surface finish for clean, burr-free holes.