- Module 1 to 3 - Helical angle 35° - Pitch angle 45° - Face angle: 20 teeth = 49°12’ 25 teeth = 48°22’ 30 teeth = 47°48’ - Pressure angle 20° - Two gears are needed to make a pair, one angled to the right (R), the other to the left (L) - This pair must be used together - Material: steel S45C - Teeth surfaces are induction hardened Option - HPC are unable to modify these parts