This is a 37mm Rocket Flare Projectile with a pop on cap. This projectile can be fused or un-fused and it is available in all ten of our custom colors. This projectile is designed to be used with estes rocket motors size "A10 T3". These 37mm Rocket Flare Projectiles will only work with our 4.5" casings. 

For more info on our Rocket Flare Projectiles, check our projectiles page.