Irwin 3/8 In. Round Most Machineable Metals Countersink Oakmont self-leveling underlayment used to smooth

self-leveling underlayment used to smooth and flatten interior surfaces prior to the installation of floor covering

Fits standard 2-1/8" door prep

Expands as it sets

Includes 1 pair each of 7" and 10" blades

flexible corner bead that adjusts to

Irwin 3/8 In. Round Most Machineable Metals Countersink Oakmont self-leveling underlayment used to smoothHigh speed steel with black oxide coating for corrosion resistance. 5 flute design reduces vibration for smoother drilling. Precision ground 82 deg (degree) tip for countersinking into most machinable metals. 1 4" round shank compatible with all hand held and stationary drills.