I bought these for my Shuttle Tydirium model and they are great! I wound up sanding about 0.3-0.5 mil off of the back to allow the engine light to come thru the engine exhaust ports. I cut out the exhausts on the model and these parts fit great with some dry fitting. They add to the look of the model when the lights are turned off. Price is very reasonable for the quality. They are a little flexible so be careful not to break the parts. Highly recommended parts and fast delivery. Need to convince nicholassagen to work on some other detail parts for this model as well to bring out the best of this model.