Guaranteed to outperform all uncoated cutters Super Speed Tip (SST) Core Cutters are made with state-of-the-art surface treatment technology that removes porosity during the fabrication process. This creates a perfectly smooth finish which allows for a better evacuation of material while drilling. It also helps to improve product life and reduce drilling time as it decreases friction with the work surface, which in turn reduces the amount of heat generated. Features Fully ground extra large flutes Modern tooth design and cutter geometry Special bronze SST surface treatment Universal shank Materials Aluminum Stainless steel Steel Structural Steel Applications Drilling 1/2" to 2 3/8" diameter holes Drilling with magnetic drilling units Drilling with stationary machines