SST+ 135 degree Wire gauge jobber drill Walter SST+ drill bits, made with a cobalt blend, allow you to drill more holes faster on any type of material. Product Information Brand WALTER Part # 01B530 Drill Size 30 Flute Length 1-7/16 Inch Length 2-9/16 Inch Origin Country CN Product Type Jobber Drill Bits Shank 0.1285 Inch Size #30 Product InformationMade with premium grade cobalt HSS to drill harder materials Cobalt drills can drill approximately 30% faster than HSS drills Self centering 135 degree split-point for reduced thrust requirements and minimized walking Special bronze SST surface treatmeSuggested ApplicationDrilling holes in high strength materials Heavy-duty drilling Drilling with fixed spindle machines like CNC mills and drill presses