6-Inch Plastic Propellers, 10-Pack – Build Rubber Band Powered Planes, Helicopters, and More STEM Projects

These 6-inch plastic propellers were utilized as the primary rotational component in a youth engineering activity involving gravity-assisted zipline racers. In this application, the propellers were subjected to repeated cycles of acceleration, deceleration, impact loading, and thermal exposure typical of extended outdoor instructional environments. Performance remained consistently stable. Blade integrity was maintained, rotational balance was adequate for sustained use, and no material fatigue or structural deformation was observed across multiple iterations and participants. Importantly, the propellers demonstrated a resilience well beyond what is often assumed for lightweight injection-molded components used in educational settings. Based on observed outcomes, these propellers are well-suited for hands-on STEM instruction where durability, repeatability, and safety under enthusiastic use are essential.

They served there purpose

I was pleased with these. Used them in a STEM event at local primary school in the UK - the kids loved them. Younger children will need some time practicing winding them up before launching.

These were so much fun to use in a class about flight. They fit well on popsicle sticks and the kids were able to send them all the way to the ceiling. Would definitely recommend.

If I could give these a 0 star I would. They are complete garbage. There is almost no structure that holds the propeller shaft to the mounting bracket. One soft landing and they are broken…

Bought to make a school project. They fit perfectly on a popsicle stick. And worked perfect.they are very durable .Will buy again.

I used these propellers to make helicopters with kids. When they didn’t break they worked awesome. I found if you put a lot of tension on the rubber band the propeller would snap between post and hooks holding piece. Also, the fit on a popsicle stick is pretty snug which is great to ensure it stays on but it also has broke on me because I put too much force on the wrong part of the prop. So, as long as it is not overwound and your careful placing on the stick then these are a great deal. The really do work well and made the helicopters fly far. I made 1 rubber band plane and it flew better than a store bought. I would buy these again.

We did a helicopter STEM project and students loved it. The premade propellers makes it so easy to use with popsicle sticks.

Very accurate, well balanced and good product...i would recommend this product.

Bought for Beaver craft activity, task was to make a flying machine. All were in good condition on arrival. They fit nicely onto standard lollipop sticks (got 50 pack of wooden ones from wilcos for £1). I also bought some sellotape, elastic bands and paperclips (to loop elastic bands round to at the bottom) for this activity so that the helicopter design could be made easily. Overall the quality of these is good, they were loaded with high tension from many elastic bands, thrown around and smashed into things as they flew, but none of them broke. Due to the cost, (~£13 for 10) we will be re-using them (rather than letting the kids take them home) so they have been a worth while investment for the group. I would recommend these.

I purchased these for a STEM project that I gave my Grade 6 students. Many, almost all of the nose bearings snapped during the model plane trimming process. I wouldn't buy these again.