Okay, the user sent "c-spanner". Let me check what that is. A "c-spanner" is a type of wrench used in plumbing, right? It's also known as a basin wrench. Now, I need to translate this into French. The standard translation for "spanner" in French is "clé à molette", but since it's a specific tool, maybe there's a more precise term. Let me confirm. Yes, in French, "c-spanner" is often referred to as "clé de plombier" or "clé à molette de plombier". However, the user might just want the direct translation. Wait, the original term "c-spanner" is already in English, so translating it would be "clé à molette" but with the "c-" prefix, maybe it's "c-clé à molette"? No, that doesn't make sense. Alternatively, in French, the term might be "clé de plombier" without the "c-". But the user might be referring to the tool's name as "c-spanner", which is a brand or specific type. Hmm, perhaps the correct translation is "clé de plombier" or "clé à molette de plombier". But since the user wants the translation of the term "c-spanner", which is a specific tool, the best translation is "clé de plombier". However, I should check if "c-spanner" is a registered term. If it's a brand, maybe it stays as is. But the user's instruction is to translate into French, so I should go with the standard term. So the answer is "clé de plombier".