This part is from Solid Propulsion Industries
cost:
1300
mass:
1.75
category:
Engine
TechRequired:
Start
engine_data:
standard
{"isp"=>{"vac"=>350.0, "atmo"=>90.0}, "propellant_ratios"=>{"SolidFuel"=>0.9}, "max_thrust"=>8.0e+96}