Prolinemax 7 PC HSS Counterbore Set #6-1/2 with 3‑Lip for Chip Flow

Description

Product Overview

The Prolinemax 7‑piece HSS Counterbore Set is engineered for demanding industrial and scientific environments where precision, durability, and efficiency are non‑negotiable. Constructed from high‑speed steel (HSS), each counterbore tip maintains a hardened cutting edge that resists wear even under high‑temperature conditions. The set includes sizes #6, 8, 10, 1/4, and 1/2, covering a broad spectrum of bolt diameters and allowing technicians to expand general rough holes or finish hole processing for bolts with confidence.

What distinguishes this set is the patented three‑lip geometry on each cutter. The three‑lip design creates a balanced cutting action that promotes smooth chip evacuation, reduces heat buildup, and extends tool life. The cutters are also re‑grindable, meaning that once the edge dulls, a professional can restore the original geometry without replacing the entire set. This feature translates into lower long‑term costs and less downtime for workshops that rely on high‑volume production.

Every component is housed in a rugged, impact‑resistant case that safeguards the tools during transport and storage. The case may vary slightly in color, but it always includes a custom foam insert that holds each counterbore securely, preventing movement and protecting the cutting edges from accidental damage. The set’s compact footprint makes it easy to integrate into existing toolboxes, tool chests, or mobile workstations.

Usage

This counterbore set is designed for a wide range of applications, from aerospace component fabrication to automotive repair shops, and from heavy‑duty machinery maintenance to precision instrument assembly. The HSS material and three‑lip design excel when working with stainless steel, alloy steel, and other hard metals where chip control is critical. Whether you are preparing a bolt seat for a high‑torque fastener or enlarging a pilot hole to accommodate a larger screw, the set provides the stability and accuracy required for repeatable results.

Field technicians will appreciate the set’s versatility in tight spaces. The compact size of the #6‑1/2 cutter allows it to reach into confined cavities, while the larger 1/2 cutter can handle more substantial material removal tasks. The ergonomic handle design reduces operator fatigue during extended use, and the balanced weight distribution ensures smooth rotation without wobble.

In addition to traditional machining, the set performs well in hand‑driven applications where a drill press or magnetic base is unavailable. The cutters can be mounted on standard drill chucks, and the three‑lip geometry helps to prevent chip clogging when operating at lower speeds, making it suitable for on‑site repairs and field modifications.

Why Choose Us

Choosing the Prolinemax Counterbore Set means investing in a tool family that combines engineering excellence with practical convenience. Our commitment to quality is reflected in the rigorous testing each cutter undergoes before it reaches the market. We verify cutting performance, chip evacuation efficiency, and edge retention under simulated industrial conditions, ensuring that every set meets or exceeds industry standards.

Beyond the technical specifications, Prolinemax provides comprehensive customer support. Our technical assistance team is available to answer questions about tool selection, re‑grinding procedures, and optimal operating parameters. We also offer a limited warranty that covers manufacturing defects, giving you peace of mind that your investment is protected.

Environmental responsibility is another pillar of our brand. The HSS material is recyclable, and our packaging uses minimal plastic, focusing on sustainable materials wherever possible. By choosing Prolinemax, you align with a manufacturer that values both performance and stewardship.

Key Features

• Three‑lip cutting geometry delivers smooth chip flow, reducing heat and extending tool life.
• High‑speed steel construction provides superior hardness and wear resistance for demanding metals.
• Five size options (#6, 8, 10, 1/4, 1/2) cover a broad range of bolt and screw applications.
• Re‑grindable tips allow you to restore cutting performance without replacing the entire set.
• Comes with a rugged, impact‑resistant case and custom foam inserts for secure storage and transport.
• Ergonomic design minimizes operator fatigue during prolonged use.
• Prolinemax technical support and limited warranty ensure reliable after‑sales service.

FAQ

What material is the counterbore set made from?

The set is fabricated from high‑speed steel (HSS), which offers excellent hardness, heat resistance, and durability for cutting a variety of metals.

Can the cutters be re‑sharpened?

Yes, each cutter is designed to be re‑grindable. A qualified tool technician can restore the original three‑lip geometry, extending the life of the set.

What sizes are included in the set?

The set includes five cutters sized #6, 8, 10, 1/4, and 1/2, providing flexibility for a wide range of bolt seat and hole‑expansion tasks.

Is the set compatible with standard drill chucks?

Absolutely. All cutters feature a standard shank that fits common drill chucks, allowing use with both handheld drills and bench‑mounted drill presses.

What warranty does Prolinemax offer?

Prolinemax provides a limited warranty covering manufacturing defects, ensuring that any issues arising from material or workmanship are addressed promptly.