1.0 x 8 Fine Thread - Serrated style tip (most commonly used set screw)
1.25 x 8 Course Thread - Non Serrated style tip (very uncommon used set screw)
1.0 x 8 Fine Thread - Serrated style tip (most commonly used set screw)
1.25 x 8 Course Thread - Non Serrated style tip (very uncommon used set screw)
