High Performance Metalworking Services

Precision cutting tools for metal

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Complete Toolholding & workholding

Highest radial Run-out accuracies!

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Production Efficiency & Cost reduction

Non-Standard Composite High-Precision

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The most powerful family of brands in the industry

Family Of Brands

OSG Shaping Your Dreams

OSG is a leading manufacturer of taps, end mills, drills, and indexable cutting tools. OSG’s extensive line of high technology cutting tools features exclusive metallurgy, cutting geometries and proprietary surface treatments to help increase productivity, reliability and tool life.

9Stellar Perfect Quality & Competitive Price

We serve precision manufacturing and provide continuously stable and excellent new products and services, efficiency and performance. Help customers improve competitiveness and profitability by manufacturing parts in less time, reducing tool changes and extending tool life.

ZCC.CT Your Partner Your Value

ZCC.CT built up the world class production lines of indexable inserts, tool holders, solidcarbide drilling tool, end mills . The combination of production, sales, and R&D brings ZCC.CT to the leading position of the tungsten carbide cutting tools supplier in China.

Featured & Popular Products


New WCE5 Solid End Mill

New 5-flute geometry offers affordable performance in carbon and stainless-steel, and cast-iron side milling and shoulder milling applications.


Efficient Multi-purpose

The A-XPF enables the reduction of tool change time caused by cutting chip troubles and machine downtime required for removing accumulated cutting chips.


Precision & Performance

Superior point strength with low cutting force. Drilling solutions with ultra precision and performance for maximum productivity.


Performance Reamers

Our broad selection of high quality, easy-to-use reamers are perfect for advanced machining and large batch production.

Specialist knowledge from the experts

Quality Tools

When you buy our products, you're not just buying speed, power and precision - you're buying impeccable quality.

Services and Solutions

Our products, services andexpertise help increase productivity andtake cost out of your operations.Maximize your machining, andgrinding.
Website Change Notification

Dear valued users,

We’re excited to announce that we’ve revamped our website to enhance your experience! Our team has worked hard to make the following improvements:

Sleek Design: Our new design is clean, modern, and user-friendly.
Faster Load Times: We’ve optimized page speed, so you’ll find everything faster.
Mobile-First Approach: The site now adapts seamlessly to any device.
Clear Navigation: We’ve simplified menus and improved search functionality.
Enhanced Content: Relevant, up-to-date content awaits you.
Visit our new website today and explore the changes firsthand. We value your feedback, so feel free to share your thoughts!

Thank you for being part of our community.

Best regards

Old website: https://www.big-tools.com/ (Closed)
New website: https://big-tools.com/ (Welcome to visit)