Features: Customizable 21 Sections: This upgraded F 290 storage case includes 21 dedicated compartments with 4 movable dividers and 11 fixed slots. Permanent PP Build: Constructed with reinforced polypropene substance for long lasting strength, this case withstands drops, rough handling, and daily use without damage. Ideal for storing metal tools and hardware in garages or workshops. Secure Latch Closure: Equipped with two robust clasps to prevent accidental openings during transport. Transparent Cover Visibility: The highly see through lid enables quick content identification without opening. Perfect for organizing fasteners, fishing gear, craft supplies, or rudiments with adaptable compartment options. Space Saving Stackable Shape: Features a low profile design with uniform dimensions for stable vertical stacking. Specifications: Product substance: Heavy-duty, high-hardness, compression-resistant PP engineering base + Thickened, high-transmittance panoramic -proof upper cover + High-toughness anti-slip nylon lock Product model: Upgraded F-290 Specifications Appearance color: Tough industrial black bottom shell + Eye-catching and highly recognizable lemon lock + Fully transparent high-definition cover Packing specifications: Single package (1-Pack / single package) Internal structure: Built-in 21 grids (11 fixed framework slots + 4 (Removable removable red inserts, expandable) Package Includes: 1 × F-290 21- hardware tool parts storage box body note: Pay attention to the storage methods.