Cle-line C21160 135° High Speed Steel Length Drill Set 15‑Piece

Description

Product Overview

The Cle-line C21160 135° high speed steel (HSS) mechanics length drill set is engineered for professionals who demand precision, durability, and versatility in a single package. Comprising fifteen meticulously ground bits ranging from 1/16‑inch to 1/2‑inch, the set covers the most common diameters used in construction, maintenance, and industrial repair applications. Each bit features a 135° split‑point geometry that reduces walking, improves centering, and delivers clean, accurate holes in a wide variety of materials, including steel, stainless steel, aluminum, and hardened alloys. The black‑gold finish not only provides an attractive, professional appearance but also adds a layer of corrosion resistance, extending the service life of each drill bit even in harsh, moisture‑laden environments. Weighing just 1.92 pounds and measuring 8.46 x 4.13 x 1.18 inches, the compact case is designed for easy transport and quick access on the job site. Manufactured by Greenfield Industries, Inc., a trusted name in cutting‑tool production, the C21160 set meets rigorous quality standards and is proudly made in the United States.

Usage

This mechanics length drill set excels in scenarios where a longer shank is required to reach deep or recessed fasteners without sacrificing rigidity. Electricians, HVAC technicians, automotive mechanics, and general contractors will find the extended length especially useful when drilling through thick wall panels, conduit, or structural steel members. The 135° split‑point tip allows for rapid start‑up, minimizing the need for pilot holes and reducing overall project time. Whether you are installing conduit in a commercial building, fabricating custom brackets for machinery, or performing routine maintenance on heavy‑duty equipment, the C21160 bits deliver consistent performance. The set’s size range accommodates a broad spectrum of screw and bolt sizes, making it a one‑stop solution for both new installations and retrofit projects. Its ergonomic case includes a secure magnetic holder that keeps each bit in place, preventing loss and ensuring that the right size is always at hand.

Why Choose Us

Choosing the Cle-line C21160 set means investing in a product backed by decades of cutting‑tool expertise and a commitment to American manufacturing excellence. Each bit undergoes a rigorous heat‑treatment process that enhances hardness and wear resistance, guaranteeing a longer cutting life compared to standard carbon‑steel alternatives. The 135° split‑point design is a result of extensive field testing, delivering superior chip evacuation and reduced torque, which translates to smoother operation and less strain on your drill motor. Our black‑gold coating not only looks premium but also provides an additional barrier against rust and corrosion, a critical factor for tools that are frequently exposed to oil, water, or chemicals. Moreover, Cle-line offers responsive customer support and a straightforward warranty policy, giving you confidence that any concerns will be addressed promptly. When you purchase this set, you are not just buying drill bits—you are gaining a reliable partner that helps you finish projects on schedule and within budget.

Key Features

• 15 precision‑ground HSS bits from 1/16″ to 1/2″ provide versatile coverage for most fastening tasks.
• 135° split‑point geometry reduces walking and starts holes instantly, saving time on the job.
• Extended mechanics length shank reaches deep or recessed fasteners while maintaining rigidity.
• Durable black‑gold finish resists corrosion and offers a professional appearance in demanding environments.
• Made in the USA with rigorous quality control and backed by responsive customer support.

FAQ

What materials can these drill bits handle?

The C21160 bits are made from high speed steel, allowing them to efficiently drill through steel, stainless steel, aluminum, brass, and many hardened alloys commonly encountered in construction and industrial settings.

Do I need a special holder for the extended shank?

No special holder is required. The bits are compatible with standard 1/4‑inch and 3/8‑inch drill chucks. The extended length simply provides additional reach without compromising stability.

How does the 135° split‑point improve performance?

The 135° split‑point creates a sharper tip that reduces the tendency of the bit to wander, allowing for precise hole placement and faster drilling, especially in hard materials.

Is the set covered by a warranty?

Yes, Cle-line offers a limited warranty that covers manufacturing defects. Contact our customer service team for assistance and replacement if a defect is identified.

Can I use these bits with a cordless drill?

Absolutely. The bits are designed to work with both corded and cordless drills, provided the drill has a compatible chuck size. Their high‑speed steel construction ensures reliable performance regardless of power source.