Features: Multiple apertures options from 4mm to 42mm accommodate various drill bits and milling cutters, offering multifunctional storage solution for tool. Constructed with solid ABS material, this organizers resists wear and tear, ensuring long lasting performances without deformation. Designed for machinists, DIY enthusiasts, and professionals needing organized tool management in workshops or garages. Streamlines your workspaces by securely storing bits and milling accessories, ideal for industrial projects or home garage setups. Label friendly surfaces and stackable design optimize vertical space while preventing tool mix ups during intensive machining operations. Specifications: Material: ABS Size: External Dimension: 350x240x30mm/13.78x9.45x1.18inches, Type: 4/6/8/10/12/16/20/25/32/42mm/Large Single Grid Optional Package Includes: 1Pc Thickened Drill Bit Storage Box note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.