Walter SST+ Cobalt Jobber Drill Bit #12

Precision Drilling for Tough Metals

Welders and fabricators know that drilling through stainless steel can be one of the most frustrating tasks in metalworking. Work-hardening can ruin a bit in seconds if the geometry isn't right. The Walter #12 SST+ Jobber Drill Bit is specifically designed to conquer these hard alloys. At its core is a premium cobalt blend that resists the intense heat generated when drilling stainless, allowing the bit to cut freely without dulling prematurely. This makes it an essential tool for anyone fabricating pressure vessels, food-grade equipment, or structural stainless components.

One of the standout features for fabricators is the exclusive self-centering Speed Tip. When working with round stock, pipe, or tubing, standard bits often "walk" across the surface, damaging the finish and ruining the alignment. The Speed Tip bites instantly upon contact, allowing you to drill precise holes on curved surfaces without the need for a center punch. This feature alone saves significant layout time and improves the overall accuracy of your fit-up.

Chip evacuation is another critical factor in drilling performance. The SST+ features a specialized flute geometry that pulls chips out of the hole rapidly. This prevents the chips from packing in the flutes, which causes binding and snapping. Whether you are drilling pilot holes for tapping or clearance holes for fasteners, the Walter #12 SST+ delivers clean, burr-free holes with minimal effort. The bronze surface treatment further aids in smooth cutting, reducing the axial force required by the operator and reducing fatigue during repetitive drilling tasks.