T6 to T40 screwdriver bit set with strong magnetic 6.35mm shank steel construction includes 12 pieces for power drills and manual drivers in black colour with 25mm total length
12-Piece T6 to T40 Screwdriver Bit Set with Strong Magnetic Tip and 6.35mm Shank

This comprehensive screwdriver bit set provides twelve different sizes ranging from T6 to T40, designed to handle various screw types encountered in both professional and DIY applications. The steel construction offers a hardness rating between 58 and 62 degrees, while the strong magnetic tip helps secure screws during operation. With a standard 6.35mm hex shank, these bits work with most electric drills and manual screwdriver handles, making them suitable for multiple tool types without requiring specialised adapters. The 25mm total length offers a balanced design that works well in both confined spaces and general use scenarios.
Features and Construction

The set's practical design centres around compatibility and functionality across different screw types and driving methods. Each bit features the same construction specifications regardless of size, ensuring consistent performance whether you're using the smallest T6 or largest T40 bit. The black colour provides clear visibility against most backgrounds, while the magnetic properties offer practical assistance during screw placement and removal.
Material and Build
Manufactured from steel with a hardness rating between 58 and 62 degrees, these bits provide the necessary durability for standard screw driving applications. The strong magnetic tip is integrated into the bit design rather than added as a separate component, helping to maintain screw alignment during use. This construction approach ensures each bit can withstand typical torque levels encountered in both manual and powered driving situations without specialised heat treatment or coating claims.
Size and Practical Fit
With twelve sizes covering T6 through T40, this set addresses common screw types found in furniture assembly, electronic device repair, general maintenance, and construction tasks. The 6.35mm (1/4-inch) hex shank represents the industry standard for compatibility with most power tool chucks and manual driver handles. Measuring 25mm in total length, each bit offers sufficient reach for typical applications while maintaining a compact profile that works in confined spaces where longer bits might not fit comfortably.
Uses and Placement

The size range and compatibility features make this bit set suitable for various applications where multiple screw types need addressing with minimal tool changes. From assembling flat-pack furniture with different screw sizes to maintaining household items with varied fastening requirements, having twelve sizes readily available reduces the need for separate bit purchases. The magnetic feature proves particularly useful when working in awkward positions or when dealing with small screws that might otherwise drop and become lost.
Event or Professional Use
For trade professionals or regular DIY enthusiasts, the comprehensive size range means fewer interruptions to locate specific bits during jobs involving multiple screw types. The magnetic tip assists when working overhead or in situations where screw placement proves challenging, while the standard shank size ensures compatibility with most workshop tools. The hardness rating provides confidence for regular use without premature wear concerns, though specific longevity claims beyond the stated hardness data cannot be made.
Everyday Home Use
Homeowners will appreciate having twelve common sizes readily available for spontaneous repair tasks, furniture assembly, or appliance maintenance. The set's organisation-free nature means bits can be stored together without specialised cases, while the magnetic feature helps when dealing with small screws that might otherwise prove frustrating to handle. The black colour makes individual bits easy to identify against typical work surfaces, reducing time spent searching for the right size during projects.
Benefits and Buying Value

The primary advantage lies in having multiple sizes in one purchase rather than buying individual bits as needed, which typically costs more over time. The compatibility with both electric and manual drivers means you can use the same bits across different tools without purchasing separate sets, while the magnetic feature offers practical assistance regardless of driving method. The steel construction and stated hardness rating provide reliable performance without requiring specialised maintenance or careful storage conditions.
Reuse and Low Maintenance
These bits require minimal maintenance beyond occasional cleaning to maintain magnetic properties and prevent debris buildup in the driving surfaces. Their uniform construction means all twelve pieces share the same care requirements despite size differences, simplifying upkeep. The steel material can handle typical workshop environments without specialised corrosion protection, though storage in dry conditions helps maintain optimal performance over extended periods between uses.
Why Choose This Product
Selecting this bit set provides twelve commonly needed sizes in one purchase, eliminating the need to buy individual bits separately as different projects arise. The 6.35mm shank ensures compatibility with most tools already owned, while the magnetic feature adds practical value during actual use rather than just theoretical benefits. The hardness rating offers performance assurance without exaggerated claims, and the complete size range from T6 to T40 covers most non-specialist screw types encountered in typical applications.

