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Socket bit Wera 4 mm 3/8 inch 05004900001 for 3/8" drive
Wera 05004900001 socket bit 4 mm for 3/8" drive is a single-piece insert designed to fit fasteners that require a 4 mm socket. Manufactured by Wera for use with 3/8" drive tools, this compact bit is intended for assembly, maintenance and repair tasks where precise fit and compatibility with a 3/8" drive are needed.
The Wera 4 mm socket bit provides accurate engagement with 4 mm fasteners and is made to fit 3/8" drive tools, ensuring reliable torque transfer. Its compact single-piece design simplifies storage and use with standard 3/8" sockets and adapters. The bit is suitable for repeated use in professional and DIY environments when the correct drive-to-bit combination is required.
Insert the 4 mm socket bit into a compatible 3/8" drive ratchet, extension or adapter. Position the bit on the fastener head and apply steady torque appropriate for the fastener material and specification. Check fit before applying high torque to avoid rounding the fastener. After use, store the bit in a suitable holder or toolbox to prevent loss and damage.
Use this Wera socket bit only with compatible 3/8" drive tools and appropriate fasteners. Match bit size to the fastener to reduce wear and risk of damage; avoid excessive force beyond the tool and fastener specifications.
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