- number of teeth - 84
- pressure angle - 20 deg
- outside diameter - 65.57 mm
- hole diameter - 31.75 mm
- height - 12 mm
- accuracy - сlass A
- material - T1, HS18-0-1 (P18-USSR)
steel T1: hardness - 63Rc, tungsten (W) - 18%, offers 25% longer run times than M2 HSS
- made in USSR