Dark Thread Cutting Oil, 55 gal Drum ORS NASCO Compatible across the range of Compatible across the range of hole saws Various shank sizes 3 8 inch or 1 2 in drills Short pilot drills and arbors require a 3 1 16 inch pilot bit Long pilot drills and arbors have a pass through shank Hex arbors with non slit jaw slots are positive drive Abrasive Material Ceramic Abrasive Trade Name Bear Tex Blaze Rapid Strip Anchor Brand Catalog NO Applicable Materials Aluminum PCBs and heavy metals (complete MSDS available) Cools threads and pipe during operation Speeds metal removal Improves thread quality Reduces threading torque Free of chlorine and other halogens