Nut driver bit Makita E-12354 3 pcs 17 19 21 mm

The Makita E-12354 3 pcs nut driver bit set includes three commonly used sizes — 17 mm, 19 mm and 21 mm — designed for driving hex nuts and bolts with a 1/2" (25.4 / 2 mm) shank. Each bit measures 86 mm in length, offering a balance between access depth and control. Manufactured to meet the requirements of general assembly, maintenance and repair tasks, the set is compatible with impact drivers, cordless drills with suitable adapters and hand-held nut drivers that accept a 1/2" shank.

Advantages

The set provides a compact selection of frequently used sizes, reducing the need to change tools during repetitive fastening work. The 86 mm length gives improved reach into recessed nuts while preserving torque transfer from the 1/2" shank. Construction and finish are intended to resist wear from regular use and to maintain a precise fit on hex fasteners, which helps reduce rounding and cam-out.

Suitable for

• Automotive maintenance and tyre-related fastenings where 17, 19 or 21 mm sizes are common
• General mechanical assembly and workshop repairs
• Construction and installation tasks requiring hex nut tightening or removal
• Use with impact drivers, ratchets or powered wrenches that accept 1/2" shanks

Key specifications

• Set composition: three nut driver bits — 17 mm, 19 mm, 21 mm
• Shank size: 25.4 / 2 mm (1/2") compatible with 1/2" tool holders
• Overall bit length: 86 mm
• Material and finish: engineered for enhanced wear resistance and fit (manufacturer standard)

How to use

Select the nut driver bit matching the nut or bolt head size. Insert the 1/2" shank securely into a compatible chuck, socket adapter or drive tool. Apply steady, controlled torque when tightening to avoid over-torquing; when loosening, ensure the tool is set to the appropriate rotation and start at low speed to seat the bit on the fastener. For recessed or hard-to-reach fasteners, the 86 mm length provides additional reach while maintaining engagement with the hex profile.

Usage recommendations

Inspect bits for wear or deformation before use; replace any bit that shows rounding or damage. Use appropriate personal protective equipment and follow the torque specifications of the fastener and equipment in use. When using with impact tools, confirm the bits are rated for impact use to ensure safety and longevity.