That’s a Nick-Free Automatic Wire Stripper
What it’s used for:
Stripping insulation off wires without cutting or "nicking" the copper strands inside. Electricians love these for panel wiring, control panels, and anywhere you need clean, fast strips.
Key details from your photo:
1. Type: Nick-Free Wire Stripper / Automatic Stripper
2. Model: NO. RDWS-101 B
3. Packaging: Red box with Japanese writing + "NICK-FREE WIRE STRIPPER"
4. Features:
• Red handles with spring return
• Adjustable stop at the top - sets strip length
• Auto-adjusting jaws - it grips and strips in one squeeze
• No need to select gauge - it adjusts to the wire size automatically