01E708 - Walter SST+ High Performance Jobber Drill Bit Set with Metal Index

Precision Engineering for Industrial Drilling

The Walter SST+ Prentice Drill Set represents the pinnacle of drilling performance for industrial maintenance and fabrication environments. Designed to address the specific metallurgical challenges of drilling through tough alloys, these bits are engineered from a proprietary cobalt-blend High Speed Steel (HSS). This material composition significantly enhances red hardness, allowing the cutting edges to maintain their sharpness even under the high thermal loads generated when drilling stainless steel and other ferrous metals. The set is housed in a robust metal index container, ensuring that these precision tools are protected from the harsh realities of the shop floor while providing immediate visual access to the correct size.

A defining feature of the SST+ series is the 135° split point geometry. Unlike standard 118° points that require a center punch to prevent walking, the SST+ point is self-centering. This allows for immediate penetration upon contact, even on curved surfaces such as pipes or round stock. This geometric precision reduces the axial force required by the operator, minimizing fatigue and improving hole accuracy. Furthermore, the bits are designed with Walter's exclusive Quick Shank technology. On sizes 3/16" and larger, the shank features three precision-ground flats. This design mechanically locks the bit into the drill chuck, ensuring positive torque transmission and completely eliminating the risk of the bit spinning inside the chuck jaws—a common cause of damage to both the bit and the tool.

The organization provided by the durable metal case cannot be overstated. In a fast-paced MRO environment, time spent searching for the correct diameter is time lost. The case features clearly labeled inside panels that identify each bit size, facilitating rapid selection and easy inventory management. Whether used in stationary drill presses or portable hand drills, the Walter SST+ set delivers consistent, high-tolerance results across a wide range of materials, including aluminum, mild steel, and heavy-duty stainless alloys.