deli | Deli Heavy Duty Utility Knife Black SK5 Carbon Steel Blades 9mm/18mm Auto-Retractable Box Cutter Sharp for Cardboard Cartons

✅ Premium SK5 Carbon Steel Blades – Excellent hardness, long‑lasting sharpness for clean cuts✅ Two size options: 9mm & 18mm, meet light trimming and heavy‑duty cutting needs✅ Auto‑retractable safety mechanism: blade auto springs back to avoid accidental injury✅ Sturdy heavy‑duty body, stable performance for frequent use✅ Perfect for cardboard, cartons, packaging, warehouse logistics, office & home unpacking