This part is from US Rockets
cost:
325
mass:
0.75
category:
Engine
TechRequired:
start
engine_data:
standard
{"isp"=>{"vac"=>301.0, "atmo"=>102.0}, "propellant_ratios"=>{"SolidFuel"=>1.0}, "max_thrust"=>60.0}
resources:
SolidFuel
58.5