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★ Butterfly Knife | Rust Coat — CS2皮肤价格、磨损度与购买指南 [2026]

This is a custom-designed balisong, commonly known as a butterfly knife. The defining characteristic of this weapon is the fan-like opening of a freely pivoting blade, allowing rapid deployment or concealment. As a result, butterfly knives are outlawed in many countries. This memento from Siege is still perfectly operational although the exterior surfaces have rusted.

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