Features: This complete socket trays set is designed for eliminating your tool box cutter and keeping it organized. Make it convenient for you to find the dedicated socket instantly. Each posts marking with clear socket sizes for instantly identification to save your time. Easy to distinguish when they mixed. Craft from quality plastic that can keep your socket from oil and gas. Feature extended base to hold your socket securely. Fit to Imperials size from 3/16"-5/8" (1/4" drive), 1/4” to 1” (3/8" drive), 3/8" to 1-1/4"(1/2" drive). Metric size from 4.5mm to 15mm (1/4" drive), 6mm to 20mm (3/8" drive), 10mm to 27mm (1/2" drive). Great for both deep and shallow: Double rail design support storing both deep and shallow at the same time. Specifications: Material: Plastic Size: As pictures shown. Optional System: Metric(Black), Imperials(Red) Applicable socket size: 1/2", 3/8", 1/4" Package Includes: 1 set(3pcs) Socket Organizers Tray note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.