0.5000″ (1/2) Min Bore DIA x 1.250″ (1-1/4) Max Bore Depth x 0.1870″ (3/16) Tooth Width x 0.1500″ Projection x 0.5000″ (1/2) Shank DIA x 3.00″ (3) Overall Length – Carbide Retaining Ring Grooving Right Hand, AlTiN Coated