01E625 - Walter SST+ Metric Drill Bit Set 25-Piece with Metal Index

Precision Metric Drilling with Walter SST+

The Walter 01E625 SST+ Metric Drill Bit Set is a premium selection of 25 high-performance drill bits designed for the professional fabricator, machinist, and maintenance technician. Ranging from 1.0mm to 13.0mm in 0.5mm increments, this comprehensive set ensures you have the exact metric size required for any industrial task. The bits are housed in a robust metal index container that fits securely inside a shock-resistant, extra-thick polyethylene carrying case, ensuring your tools remain organized, labeled, and protected even in the toughest shop environments.

At the core of these bits is Walter's renowned SST+ technology. Manufactured from a special High Speed Steel (HSS) blend containing cobalt, these bits are engineered to withstand high temperatures and resist wear significantly better than standard HSS bits. This material composition allows for faster drilling speeds and a longer lifespan, making them a cost-effective choice for high-volume operations. The flute design is optimized for efficient chip evacuation, preventing clogging and heat buildup that can damage both the bit and the workpiece.

One of the standout features of the SST+ line is the Quick Shank design (typically available on sizes 3/16" and larger or metric equivalents). This unique shank profile features three flat surfaces that lock into the drill chuck, guaranteeing positive drive and preventing the bit from spinning under heavy loads. This is particularly important when drilling through tough materials where high torque is required. Whether you are drilling mild steel, aluminum, or other non-ferrous metals, the Walter SST+ set delivers clean, precise holes with minimal effort.

The 135° split point geometry allows for self-centering, eliminating the need for a center punch and preventing "walking" on the workpiece. This makes them exceptionally effective for drilling on curved surfaces or pipes, where standard bits often slip. With the Walter 01E625 set, you gain not just a collection of tools, but a reliable solution for precision metalworking.