Brand new, each a factory sealed box.
(I'm even keeping the one I opened for my kids).
(1) stick magazine compatible with Nerf Pro Sender and Nerf Pro Torrent blasters (and a few others with some modifications)
(15) Half length 'Stefan' pro performance darts. Meant for stability, high velocity and accuracy from a Nerf platform that either takes half length darts natively or has an adapter. I've tested these on a couple of platforms and I'll say confidently that the darts are universally compatible, durable, and they perform extremely well.
The half length Stefan type dart was created during the social distancing and boredom of the Covid 19 era lockdowns. Originally some found that a sturdy rubber tipped Nerf dart, when cut in half, was capable of much greater accuracy, stability and velocity when launched with modified blasters using upgraded springs.
They proved so popular and effective in the competitive Nerf scene (modern paintball pretty much) that Nerf themselves started a new line, the Nerf Pro line, and started manufacturing the style of darts. These darts, 15 if them and a magazine.