Jobber Drill Bit, Fractional Inch, Size 1/4 In., Decimal Equivalent 0.2500, Point Angle 135.00 Degrees , Material Cobalt Steel, Finish Uncoated, Coolant Through No, Overall Length 4 In., Cutting Direction Right Handed, Shank Dia. 1/4 In., Flute Length 2-3/4 In., Point Type Conventional Point. Bits that are 1/8 In. and larger feature a split point; bits 3/16 In. and larger feature a three-flat shank, for better bit grip.
Bosch cobalt drill bits offer the best heat resistance and rigid thick web design for drilling in extremely hard and abrasive materials such as treated stainless steel (precipitation-hardened), cast iron and titanium.