Greenlee 921-36 3/16″ x 36″ Flexible Drill Extension for Tight Spaces

Description

Product Overview

The Greenlee 921-36 D’VersiBIT Flexible Drill Extension is engineered to provide an additional 36 inches of reach for 1/4″ quick‑change accessories, making it an essential tool for electricians, contractors, and maintenance professionals who encounter confined spaces. Crafted from high‑speed steel (HSS), the extension offers superior durability and resistance to wear, ensuring a long service life even under demanding conditions. Its straight shank design, measuring 3/16″ in diameter, delivers a rigid connection that minimizes wobble and maximizes torque transfer, while the black finish protects against corrosion and visual wear.

Key specifications include a total length of 36 inches, a weight of just 6.4 ounces for easy handling, and a capacity to accommodate any 1/4″ quick‑change accessory up to 3/4″ in diameter. The extension is compatible with a wide range of metal and steel drilling applications, making it a versatile addition to any tool kit. Its compact profile, measuring only 4.1 x 39 x 0.7 inches, allows for storage in tight toolboxes without sacrificing performance.

Usage

Designed for tight and compact work environments, the Greenlee 921-36 extension excels in scenarios where standard drill bits cannot reach. Whether you are installing conduit in a crowded electrical panel, drilling holes in structural steel beams, or performing maintenance on machinery with limited clearance, this extension provides the flexibility needed to complete the job efficiently. The 1/4″ quick‑change receiver enables rapid swapping of accessories, reducing downtime and allowing you to adapt to varying task requirements on the fly.

Professionals in the construction, HVAC, and industrial maintenance sectors will find the extension particularly valuable for tasks such as drilling pilot holes for fasteners, creating clearance holes for wiring, and accessing recessed fasteners in automotive or aerospace components. Its high‑speed steel construction ensures that the extension can withstand the high rotational speeds required for precision drilling, while the straight flute design promotes smooth chip evacuation, reducing the risk of binding or overheating.

Why Choose Us

Greenlee is a trusted name in the electrical and tool industry, known for delivering products that combine rugged construction with thoughtful engineering. The 921-36 extension benefits from Greenlee’s extensive research and development, offering a balance of strength, flexibility, and ease of use that few competitors can match. Each extension undergoes rigorous quality testing to ensure it meets or exceeds industry standards for performance and safety.

In addition to the robust HSS material, the extension features a precision‑machined straight shank that aligns perfectly with quick‑change accessories, eliminating play and ensuring consistent torque delivery. Greenlee also provides a one‑year warranty, reflecting confidence in the product’s durability and offering peace of mind to customers.

Choosing Greenlee means investing in a product backed by a legacy of reliability, backed by a comprehensive support network that includes technical assistance, replacement parts, and detailed documentation. This commitment to customer satisfaction sets Greenlee apart in a crowded market.

Key Features

• Extended 36‑inch reach enables drilling in confined spaces where standard bits cannot access.
• High‑speed steel construction provides exceptional durability and resistance to wear.
• 3/16″ straight shank ensures a rigid, wobble‑free connection for precise torque transfer.
• 1/4″ quick‑change receiver accepts a wide range of accessories, allowing fast tool changes.
• Backed by Greenlee’s one‑year warranty and dedicated customer support for peace of mind.

FAQ

What types of accessories can I attach to the 921-36 extension?

The extension features a 1/4″ quick‑change receiver, which is compatible with most standard quick‑change drill bits, screwdriver bits, and other accessories up to a 3/4″ diameter. This versatility lets you use the same extension across a variety of tasks.

Is the extension suitable for drilling into hardened steel?

Yes. Constructed from high‑speed steel, the extension is designed to handle high rotational speeds and the increased torque required for drilling hardened steel and other tough metals, provided you use the appropriate drill bit for the material.

Can I connect multiple extensions together for longer reach?

Absolutely. The design allows multiple Greenlee extensions to be joined securely, creating a longer shaft as needed. This modular approach lets you customize the length for specific job requirements without compromising stability.

What warranty does Greenlee provide for this product?

Greenlee offers a one‑year warranty covering defects in workmanship and material. The warranty is valid from the date of purchase, provided the product is used according to Greenlee’s instructions and maintained properly.

How do I maintain the extension to ensure long‑term performance?

Keep the extension clean and free of debris after each use. Periodically inspect the shank and receiver for wear or damage, and store the tool in a dry environment to prevent corrosion. Following these simple steps will help maintain optimal performance over the product’s lifespan.