01B557 - Walter SST+ Cobalt Jobber Drill Bit - Wire Gauge #57

Precision Drilling with Walter SST+ Technology

The Walter #57 SST+ Jobber Drill Bit (01B557) represents the pinnacle of drilling performance for industrial maintenance, repair, and fabrication. Designed to tackle the toughest materials found in modern workshops, this drill bit is crafted from a proprietary cobalt blend that provides exceptional heat resistance and structural integrity. Unlike standard high-speed steel bits that dull quickly when facing work-hardened surfaces like stainless steel, the SST+ series maintains its cutting edge longer, ensuring consistent hole quality and reduced downtime for tool changes.

At the core of its performance is the innovative "High Flow" flute design. This geometry is engineered to evacuate chips more efficiently than conventional spirals, preventing heat buildup that typically leads to premature bit failure. Coupled with a back-tapered body, the design minimizes surface contact with the hole walls, significantly reducing friction and the risk of binding—a common issue when drilling deep holes in gummy metals like aluminum or tough alloys like stainless steel.

Efficiency is further enhanced by Walter’s exclusive self-centering Speed Tip. This feature allows operators to drill directly into the workpiece without the need for a center punch or pilot hole, even on curved surfaces. The bit bites instantly, preventing "walking" and ensuring precise hole placement every time. Finished with a unique bronze SST surface treatment, this tool offers superior lubricity and wear resistance. Whether used in a stationary drill press or a portable hand drill, the Walter 01B557 delivers the reliability and speed required by professional machinists and fabricators.

Key Technical Benefits

• Cobalt Blend Substrate: Withstands high drilling temperatures, making it ideal for hard alloys.
• Bronze SST Coating: Acts as a lubricant to reduce friction and heat generation.
• Self-Centering Geometry: Increases productivity by eliminating prep work.