ProtoFrenz modular fins — a fresh set of antennae for your Iris, Nyx, or Cipher head. The fin mounting system is built into every ProtoFrenz-generation head base, so swapping is as simple as pulling out the existing set and pressing in the new ones. No tools, no adhesive, no modification. Styles Available Short — clean, low-profile, understated. Works with any aesthetic. Long — classic tall protogen silhouette. The most recognizable look. Wild — asymmetric and expressive. No two angles look the same. Gundam — angular, mechanical, mecha-inspired. Makes a statement. Astro — sleek swept-back fins with a futuristic profile. DelTRON — bold geometric design with strong horizontal elements. Epic — oversized statement fins. If you want to be seen from across the hall. Headphones — side-mounted headphone-style antennae. Unique and immediately recognizable. Compatibility Fits ProtoFrenz-generation heads only: Iris (Rounded), Nyx (Pointed), and Cipher (Squared). Not compatible with Legacy heads (MK2, MK3, MK5, ZillionRoss) — those use a different antenna system. What's Included One pair of fins in your chosen style, printed in PLA+. Ships in padded envelope. 3–5 business days fulfillment.