Brand: Ernst Manufacturing Manufacturer's Part Number: 8451 Part Type: Socket Organizers Product Line: Ernst Manufacturing Socket Boss Twist Lock Socket Trays Summit Racing Part Number: ENI-8451 UPC: 789455084512 SAE: Yes Metric: Yes Quantity of Sockets Held: 57 Sizes Labeled: No Socket Drive: 1/4 in.， 3/8 in.， 1/2 in. Sockets Included: No Socket Holder Material: Plastic Socket Holder Finish: Blue Height (in.): 1.500 in. Length (in.): 19.630 in. Width (in.): 5.300 in. Quantity: Sold individually. Ernst Manufacturing Socket Boss Twist Lock Socket Trays Ernst Manufacturing Socket Boss twist-lock socket trays offer an optimum solution for socket storage! You can now easily transport sockets， securely store expensive sets， manage socket drawers， interchange socket rails， and save space. They're available in different configurations and colors to suit your socket storage needs. The trays include I.D. stickers for socket identification.