01 — Essential Specifications
Choose with confidence
Essential specifications
The facts that matter most when choosing the right product in this family.
02 -- Materials, Applications & Machines
Working compatibility
Materials, applications & machines
Quickly confirm what the tool can cut, the work it is designed to perform, and the equipment it is intended to run on.
Compatible materials
Recommended workpiece materials
- Concrete
- Masonry
Recommended applications
Typical jobs and operations
- Concrete, hard masonry, brick and block
03 -- Complete Technical Specifications
Technical data
Complete technical specifications
Open only the groups you need to confirm construction, dimensions, and operating requirements.
Construction & identification
Tool typeConcrete Core Bit Accessories
Tool subtypeConcrete Core Bit Accessories
Detailed styleExtension
Manufacturer seriesCM89HC
Series familyCM89HC
Measurement systemImperial
Manufacturer part numberHC11-EXT
Dimensions & fit
Size11"
Cutting diameter11"
Cutting depthN/A
Pack quantity1
04 -- Why Choose this series
Series advantage
Why choose the CM89HC series
CM89HC
11-inch extension that adds to a 7-inch adaptor for approximately 18-inch reach.
Features supporting this advantage
- 11-inch extension that adds to a 7-inch adaptor for approximately 18-inch reach.
05 -- Compatibility & What's Included
06 -- Use Notes & Technical Description
Before you use it
Use notes & technical description
Important fit, operating, and care guidance to review before putting the tool to work.
View the complete technical description
Champion HC11-EXT 11" Core Bit Extension for 18-Inch Reach
HC11-EXT is a Champion ProLine core bit extension for 18-inch reach for the heavy-duty SDS-Max or spline hammer core bit system. This accessory supports the heavy-duty SDS-Max or spline hammer core bit system and helps connect, center or extend compatible core bits for concrete and hard masonry materials.
Size: 11 inch. 11-inch extension that adds to a 7-inch adaptor for approximately 18-inch reach. Use with a compatible SDS-Max or spline rotary hammer in percussion or rotary mode as appropriate.
Key Features
- Exact MPN: HC11-EXT.
- Product: Core Bit Extension for 18-Inch Reach.
- Size: 11 inch.
- Application: Drilling or supporting large diameter holes in concrete and hard masonry materials.
- Material removal: External spiral flutes optimize dust removal during drilling.
- Origin: Made in Germany.
- Package: Each.
Technical Specifications
| Manufacturer part number | HC11-EXT |
|---|---|
| Product type | Core Bit Extension for 18-Inch Reach |
| Size | 11 inch |
| Application | concrete and hard masonry materials |
| Package quantity | 1 each |
| Weight | 2 lb |
Verify the core bit diameter, shank/adaptor compatibility and available drilling depth before ordering. Wear eye, hearing and respiratory protection as required, secure the work area and follow the rotary hammer manufacturer's instructions.
How ordering works
A clear process from order to delivery
Whether you need one replacement tool or a recurring supply order, every step is designed for clear communication, accurate fulfillment and dependable delivery.
1
Order submitted securely
Your products, quantities and order details enter our system for verification.
Secure submission
2
Confirmation sent
You receive a clear summary of the items and quantities, ready to review or share.
Details confirmed
3
Picking and packing
Our team prepares the correct products and quantities for safe, accurate transportation.
Carefully prepared
4
Tracking provided
As soon as the carrier label is created, the tracking information is sent to you.
Trackable shipment
5
Delivery to your location
Your order travels to the selected address with clear visibility into its progress.
Dependable delivery
Business purchasing
Built for the way businesses buy
For distributors, wholesalers, machine shops and contractors: apply for Net 30 terms, email a PDF purchase order or request tailored business pricing.
Canada & United States
Purchasing in CAD
Net 30 terms available after credit approval
PDF purchase orders accepted directly by email
Targeted pricing based on products, quantities and repeat needs
Credit decisions are usually completed in 2–3 business days. No minimum order is required to apply.