Model AA - 3/8" Shank x .2000" Tip

Audible Edge Finder with 3/8" Shank  x .2000" Tip
Max RPM for 3/8" Edge Finder is 1500 RPM
This edge finder should not be used in any high speed spindle.
This Edge Finder gives the machine operator an audible clicking sound when the tip jumps and the Black Tip on the Edge Finder is easier to see when it jumps.