Walter SST+ 17/32 Inch Cobalt Prentice Drill Bit with 1/2 Inch Shank

The Heavy-Duty Bit for Tough Metal

As a welder or fabricator, you know there is nothing more frustrating than a drill bit that burns out halfway through a hole or spins helplessly in your drill chuck. The Walter 01M534 17/32" SST+ Prentice Drill Bit is built to solve exactly those problems. When you need to drill a hole slightly larger than half an inch—whether for bolt clearance or tapping—this bit delivers the bite and stamina required for professional work. It is designed to chew through stainless steel, mild steel, and aluminum without losing its edge, saving you trips to the tool crib and keeping your project on schedule.

The secret to this bit's performance lies in its construction. It isn't just standard high-speed steel; it is made with a special cobalt blend that resists the intense heat generated when drilling hard metals. This means the cutting edges stay sharp longer, even when you are leaning into a heavy piece of structural steel. Furthermore, Walter has solved the number one headache of using large bits in portable drills: shank slippage. The 1/2-inch shank on this bit features three ground flats that lock solid into your drill's chuck. You get 100% power transfer from your motor to the metal, with zero spinning or scarring of the shank.

Time is money in the shop and out in the field. That is why the SST+ features a self-centering tip that grabs the metal immediately. You can skip the center punch and the pilot hole in many applications, just point and shoot. The bronze surface treatment helps clear chips out of the hole and keeps the bit cooler, extending its life. Whether you are modifying a truck frame, fabricating a mounting plate, or working on a repair job, the Walter 01M534 is the reliable 17/32" bit that belongs in your toolbox.

Why Welders Choose SST+

• No Slipping: 3-flat shank locks tight in your drill.
• Drills Stainless: Cobalt blend handles hard alloys with ease.
• Fast Starts: No walking, no need for pilot holes.
• Long Life: Resists heat and wear better than standard bits.