[Use]
Cutter for cutting ultra thick items.
Features:
Auto-lock type (locking force 55.1 lbs (25 kg).
Uses J-shaped blade (0.02 inch (0.65 mm) thick x 0.9 inch (22 mm) wide).
Uses a sturdy 0.03 inch (0.8 mm) thick blade holder.
2 replacement blades inside the body.
Specifications:
Replacement blade type: J-type replacement blade (0.02 inch (0.65 mm) thick x 0.9 inch (22 mm) wide)
Auto-lock type.
Built-in 2 replacement blades.
Material: Body: ABS resin.
Holder part: Stainless steel

From the Manufacturer

Auto-Lock J Compatible Replacement Blade J-Type LC-620BL

Heavy duty 0.03 inch (0.8 mm) blade holder body with 2 replacement blades. Lock system: Auto-Lock force: 55.1 lbs (25 kg). Grip material: ABS plastic holder thickness: 0.03 inches (0.8 mm).