21TPI MEDIUM LEFT PITCH
21TPI MEDIUM RIGHT PITCH
21TPI MEDIUM STRAIGHT PITCH
14TPI COARSE LEFT PITCH
14TPI COARSE RIGHT PITCH
14TPI COARSE STRAIGHT PITCH
21TPI MEDIUM LEFT PITCH
14TPI COARSE LEFT PITCH
14TPI COARSE RIGHT PITCH
21TPI MEDIUM RIGHT PITCH
21TPI Medium Straight Pitch
14TPI COARSE STRAIGHT PITCH