Description
Product Overview
The Ko-ken PK2760/6 1/4 Sq. Dr. Extension Bar Set delivers a comprehensive solution for extending the reach of your screwdriver tools. Constructed from high‑quality Acrylonitrile Butadiene Styrene (ABS) reinforced with alloy steel, each bar offers a perfect balance of durability and lightweight handling. The set includes six bars with lengths of 28 mm, 50 mm, 100 mm, 150 mm, 200 mm, and 250 mm, all featuring a 0.25‑inch nominal wall thickness that ensures structural integrity even under heavy torque. Finished in a sleek black and silver color scheme, the bars provide a professional appearance while resisting wear and corrosion. With a total item weight of just 14.1 ounces, the set is easy to transport and store, making it an ideal addition to any workshop or on‑site toolbox.
![[Product front view showing all components]](https://www.cenviro.store/wp-content/uploads/2026/08/c68ef89c6f9446d0aacf0f536fc53b24.jpg)
Usage
These extension bars are engineered for a wide range of applications, from residential electrical installations to industrial maintenance tasks. The 1/4‑inch square drive interface ensures a secure connection to compatible screwdriver bits, allowing you to reach into tight cavities, deep panels, and recessed fasteners without sacrificing torque. Whether you are tightening screws in automotive dashboards, accessing hard‑to‑reach electrical junction boxes, or assembling furniture in confined spaces, the graduated lengths provide the flexibility to select the optimal reach for each job. The ABS coating adds an extra layer of protection against accidental impacts, making the bars suitable for both indoor and outdoor environments where durability is essential.
Why Choose Us
Choosing the Ko-ken extension bar set means investing in a product backed by a reputable manufacturer with a history of delivering reliable hand‑tool accessories. Ko‑ken USA adheres to strict quality control standards, ensuring each bar meets exact dimensional tolerances and material specifications. The ABS‑coated alloy steel construction not only extends the lifespan of the bars but also reduces the risk of stripping or damaging screwdriver bits during high‑torque applications. Additionally, the set comes with a comprehensive warranty and responsive customer support, providing peace of mind for professionals and hobbyists alike. Our commitment to precision engineering and user‑centric design sets this product apart from generic alternatives on the market.
Key Features
- Six graduated lengths from 28 mm to 250 mm give you the exact reach needed for any task.
- ABS‑coated alloy steel construction provides high strength while remaining lightweight.
- 0.25‑inch wall thickness ensures durability under heavy torque without bending.
- Square 1/4‑inch drive fits standard screwdriver bits for secure, slip‑free operation.
- Includes responsive after‑sales support and a warranty for long‑term confidence.
FAQ
What sizes are included in the set?
The set contains six bars measuring 28 mm, 50 mm, 100 mm, 150 mm, 200 mm, and 250 mm, covering a broad range of extension needs.
Are the bars compatible with all 1/4‑inch screwdriver bits?
Yes, the square 1/4‑inch drive is a standard size that works with any compatible screwdriver bit, ensuring universal applicability across most tool brands.
How does the ABS coating benefit the bars?
The ABS coating adds impact resistance and protects the alloy steel from corrosion, extending the life of the bars even in harsh work environments.
Can I use these bars for automotive applications?
Absolutely. The set’s robust construction and precise tolerances make it suitable for automotive repairs, especially when accessing tight engine compartments or interior panels.
What warranty does Ko‑ken provide?
Ko‑ken offers a limited one‑year warranty covering manufacturing defects, along with dedicated customer service to address any concerns you may have.




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