Portable and Practical: Equipped with a portable case, it is convenient to carry. They have high hardness, strong bearing capacity, are not easy to bend or deform, and are durable. For example, hex keys are available in multiple sizes including 2mm, 2.5mm, 3mm, 4mm, 5mm and 6mm, and open - end wrenches are available in two specifications of 8mm and 10mm.
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