0.3125″ (5/16) Min Bore DIA x 0.750″ (3/4) Max Bore Depth x 0.0460″ Tooth Width x 0.1000″ Projection x 0.3125″ (5/16) Shank DIA x 2.50″ (2-1/2) Overall Length – Carbide Retaining Ring Grooving Right Hand, AlTiN Coated