Specifications: 61 × 19 mm SK5 blade, 6 blades included, retractable design, aluminium-alloy body, quick blade-release mechanism. Description: EMTOP ESNKT6128 utility knife designed for precise general-purpose cutting, supplied with 6 SK5 blades and packed in a double blister. specifications Tool Type: Utility Knife Model: ESNKT6128 Blade Size: 61 × 19 mm Blade Material: SK5 Steel Number of Blades: 6 Pcs Body Material: Aluminium Alloy Blade Type: Retractable Locking Mechanism: Yes Handle: Ergonomic / Durable Grip Packaging: Double Blister Brand: EMTOP Country of Origin: China