Estes Alpha PSll 2.5 upscale Flying Model Rocket Kit plywood fins and rings

One piece Birch plywood TTW fins and 3  rings 
1/8" thick 
Tobuild an Upscale Alpha 
These fins are scaled to fit Estes 2.5" body tube and should also work with BT80 tubes. 
If you purchased the kit with 2pc fins and want these. Please message me. 
Disclaimer. 
You use ollie-oop rocketry products at your own risk.