Irwin 3/8 In. Round Most Machineable Metals Countersink spread Adjusts to proper opening by

Adjusts to proper opening by means of end screw and locks onto work by squeeze of hand

Finish coordinates with popular grout colors

Easy off and on with a convenient handle

preassembled so there is no contact under load except through the rolling balls

or painted in 1 hour

Irwin 3/8 In. Round Most Machineable Metals Countersink spread Adjusts to proper opening byHigh 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.