Hyjoy Cobalt Number Size Drill Bit Set, 60Pcs M35 -Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Steel, Cast Iron, Wood and Plastic,

Multiple Dimensions: 60 sets of numerical size drill bits ranging from to #60 (0.228"-0.040" or 5.79mm-1.02mm), capable of fulfilling additional requirements M35 Cobalt Drill Bit: The M35 cobalt drill bit is versatile and efficient suitable for steel, iron castings, copper, aluminum, and other soft metals, as as plastics, wood, etc. Quick and Efficient: The cobalt drill bit set can effectively drill through most soft and hard materials, with 135 degree point tip and flute design for faster , self-centering to walk-off and faster chip and particle removal HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with enhanced durability. 13 sets of drill bits for extended use. The inserts are hardened and polished for sharpness and precise without wobbling Helpful Advice: Note the vertical angle before opening, so the drill bit can drop into the matching hole as much as possible. If it is noticed that it cannot be extracted, it might be that the drill bit underneath is stuck in the protective and requires repeated vertical movements and then gently pulled to the drill bit from breaking