Negative 5-Degree Lead Angle; 0 degrees Relief Uses WNMG, WNMA Inserts; Boring Bar Style: 12S-3 Uses WNMG, WNMA Inserts Shank : 3/4" Negative 5-Degree Lead Angle, 0 degrees Relief Shank : 3/4"

Uses WNMG, WNMA Inserts.