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Upgrade your tool collection with our Insulated Hex Key Tip Size 4mm from Wiha. Designed for professionals, these T-shaped hex keys are perfect for tightening or loosening fasteners near electrical components without the risk of electrical shock. The insulated handle provides a secure grip and allows for more torque than L-shaped keys. Ideal for use in electronics repair, mechanical work, and various other industries, these durable hex keys offer superior performance at an affordable price. Whether you're a DIY enthusiast or a professional technician, our Insulated Hex Key Tip Size 4mm from Wiha is a must-have tool for your toolbox.