The HK B-17s are really good kits. They could use some details added here and there. One of those places is the props. They are slightly misshaped. They are wider than they should be at least to my eye and to obviously Quickboost as well. Judge for yourself with the photos.
There are four prop hubs and 12 prop blades. They are all packaged in the resealable packaging that Quickboost uses with a card stock backing to protect the parts. There are 16 flawlessly cast light grey resin pieces included, four hubs and 12 blades. The blades are keyed to the hubs so there is no need for an alignment tool. The detail on the hubs is flawlessly executed and the blades are suitably thin and correctly shaped.
The only real work is to drill out the back of the hub and insert your own mount or wire.
Painting is easy enough with the yellow tips and the hubs and blades being flat black. You will have to supply your own decals as none are provided.