Loki Research manufactures high quality rocket motor hardware and solid propellant and provides supplies for motor diameters between 38mm and 152mm. Since selling our first hobby rocket motors in 2004, Loki Research has earned a solid reputation for providing its customers products of excellent reliability, quality, performance and value. You will not find a comparable product with higher reliability and quality in a hobby high power rocket motor than with Loki Research products. Ask around and look at the success of the many large and small projects we have been a part of over the years and you will see for yourself. Loki Research makes the most reliable rocket motors you can buy, period.