KY TOOLS · Precision cutting tools
The right tool.
For every cut.
Explore KONG YUN (KONGYUN) end mills, drills and reamers from KYTOOLS — Changzhou Kong Yun Precision Tools Co., Ltd.
Standard sizes. Application-specific solutions.
Explore by category.
7 tool families. One manufacturing partner.
Made for your application
Have a drawing?
Let’s make it.
Tell us your material, geometry and machining requirements.
Talk to KY TOOLSA closer look
Our established product ranges.
Carbide Drills
High-performance drilling for accuracy and efficiency
Solid Carbide Drills
Rigid, precise drilling for consistent hole quality
- Multiple point geometries
- Coated and uncoated
- Standard and custom lengths
Carbide Coolant Thru Drills
Internal coolant delivery for heat control and chip evacuation
- Improved tool life
- Higher penetration rates
- Deep hole capable
Modular Drills
Flexible configurations for fast changeovers and cost control
- Replaceable heads
- Multiple diameter ranges
- Quick setup adjustments
Step Drills
Multiple diameter steps in a single tool
- Multiple diameter steps
- Reduced tool changes
- Precise depth control
Straight Flute Drills
Zero helix angle for precise hole positioning
- Zero helix angle
- Precise positioning
- Reduced walk
Flat Drills
Flat point geometry for chamfering, deburring, and flat-bottom holes
- Flat point geometry
- Chamfering and deburring
- Flat-bottom hole capability
Contact Us for More tool categories available — not all are listed here
Solid End Mills
Precision-ground carbide for stable, high-efficiency milling
Square End Mills
Sharp corners for profiling, slotting, and finishing
- 2–6 flute options
- Coated and uncoated
- Standard and custom diameters
Bull Nose End Mills
Corner radius for strength and smoother finishing
- Variable radius options
- Improved edge durability
- Custom lengths available
Ball Nose End Mills
Ideal for 3D contouring and smooth surface finishes
- Precision spherical profiles
- Extended tool life
- Multiple reach lengths
End Mills for Titanium
Specialized geometry and coatings for titanium alloys
- Optimized chip evacuation
- TiAlN/AlCrN coatings
- Reduced heat generation
End Mills for Graphite
Diamond coating for superior graphite machining
- Diamond coating technology
- Extended tool life
- Superior surface finish
Long Neck End Mills
Extended reach for deep pocket and cavity machining
- Extended reach lengths
- Maintained rigidity
- Deep pocket capable
Contact Us for More tool categories available — not all are listed here
Carbide Reamers
Superior finishing tools for precise hole sizing
Straight Flute Reamers
Standard reaming for general purpose applications
- Multiple diameter options
- Various tolerances
- Standard and custom sizes
Spiral Flute Reamers
Improved chip evacuation for better surface finish
- Right and left hand spiral
- High-speed capable
- Extended reach options
Coolant Reamers
Internal coolant delivery for heat control and chip evacuation
- Improved tool life
- Higher penetration rates
- Deep hole capable
More tool categories available — not all are listed here
Direct Factory Customization
Custom Manufacturing
From concept to production, we build carbide tools tailored to your material, tolerance, and cycle time targets.
What we deliver
- Application-specific geometry
- Fast prototyping and validation
- Scalable production runs
- Coating and edge prep options