Magnetic Bit Holder Top Tools 1/4" 145 mm model 39D339 for screwdriver bits

Magnetic Bit Holder Top Tools 1/4" 145 mm model 39D339 is a 1/4" (6.35 mm) hex drive accessory that provides extended reach and secure bit retention for manual or powered drivers. With a 145 mm length and a magnetic tip, this bit holder accepts standard 1/4" screwdriver bits and fits into common bit sockets and extensions. It is intended for tasks requiring access to recessed fasteners or quicker bit changes while maintaining compatibility with a wide range of screwdriver bits.

Advantages

The magnetic tip holds bits firmly in place, reducing the risk of dropped fasteners and improving efficiency during repetitive fastening operations. The 145 mm length offers additional reach for accessing deep or recessed screw heads without the need for disassembly. The 1/4" hex drive ensures compatibility with standard bits and many power drivers, while the metal construction provides durability for workshop and site use. The compact diameter and universal drive format make it easy to store and combine with existing bit sets.

Suitable for

• Reaching recessed or deep-set screws in furniture, appliances, and automotive components
• Assembly and disassembly tasks where longer reach is needed
• Use with cordless drills, electric screwdrivers, and manual bit holders
• Maintenance and repair work in workshops, construction sites, and home settings

Key specifications

• Drive size: 1/4" (6.35 mm) hex
• Overall length: 145 mm
• Tip retention: magnetic
• Compatible with standard 1/4" screwdriver bits and bit sockets
• Material: metal construction for durability

How to use

Insert a compatible 1/4" screwdriver bit into the magnetic tip until it seats securely. Fit the hex shank into the chuck or bit holder of your cordless drill, electric screwdriver, or manual driver. Use steady, controlled pressure when driving screws to prevent cam-out; the magnetic tip helps keep the fastener aligned on the bit during insertion and removal. After use, remove the bit by pulling it straight out from the magnetic tip and store the holder with your bit set to prevent damage.

Usage recommendations

For safety and optimal performance, choose the correct bit type and size for the fastener, avoid using the holder with impact drivers unless the bit and holder are specified for impact use, and inspect the holder for wear or damage regularly. Keep the magnetic tip free of metal debris to ensure reliable bit retention.