Pure Copper Door Lock Replacement Core | 60–90mm Eccentric Key
Pure Copper Door Lock Replacement Core | 60–90mm Eccentric Key
Upgrade Your Home Security with a Pure Copper Lock Replacement Core
Keep your indoor and entrance doors secure with this Mandodle Pure Copper Door Lock Replacement Core. Engineered with a double-opening eccentric key mechanism, this lock cylinder delivers smooth, reliable operation every day. Whether you're upgrading an aging lock or replacing a damaged core, this drop-in replacement fits a wide range of standard door preparations right out of the box.
Why Choose This Lock Core?
- Pure Copper Construction: Solid copper cylinder and key pins for long-lasting durability and resistance to wear, corrosion, and tampering.
- Eccentric Double-Opening Key: Unique eccentric key design adds an extra layer of security compared to standard pin tumbler locks — harder to pick and duplicate.
- Multiple Size Options: Available in 60mm, 65mm, 70mm, 85mm, and 90mm to suit virtually any standard door mortise lock body.
- Brushed Finish: Sleek brushed surface blends seamlessly with modern and traditional door hardware aesthetics.
- Keys Included: Comes with keys ready to use — no extra purchases needed.
- Wide Door Thickness Compatibility: Designed for doors 35–45mm thick, covering most interior and entrance doors.
- Easy DIY Installation: Standard replacement format makes swapping out your old cylinder quick and straightforward — no locksmith required in most cases.
Product Specifications
| Brand | Mandodle |
| Material | Pure Copper |
| Surface Finish | Brushed |
| Mechanism | Eccentric Double-Opening Key |
| Available Sizes | 60mm, 65mm, 70mm, 85mm, 90mm |
| Compatible Door Thickness | 35–45mm |
| Application | Entrance & Interior Bedroom Doors |
| Keys Included | Yes |
| Country of Origin | Made in Mainland China |
Ideal For
- Bedroom and interior room doors
- Front entrance and apartment doors
- Rental property lock refreshes
- DIY home security upgrades
- Replacing worn or damaged lock cylinders
For guidance on home door security best practices, visit the Cybersecurity & Infrastructure Security Agency — or refer to the U.S. Consumer Product Safety Commission (CPSC) for consumer product safety information.
Frequently Asked Questions
Q: What door thicknesses is this lock replacement core compatible with?
A: This lock core is designed to fit doors with a thickness of 35–45mm, which covers the majority of standard interior and entrance doors. Always measure your door thickness before ordering to ensure compatibility.
Q: What sizes are available for this copper door lock core?
A: The lock cylinder is available in five sizes: 60mm, 65mm, 70mm, 85mm, and 90mm. The size refers to the total length of the cylinder, so measure your existing lock core or mortise cutout to select the correct size.
Q: Does the lock core come with keys?
A: Yes, keys are included with every lock core — you'll be ready to use it immediately upon installation without needing to purchase additional keys.
Q: What makes the eccentric key design more secure than a standard key?
A: The eccentric key design features an off-center keyway and unique pin configuration that makes the lock significantly more resistant to picking, bumping, and unauthorized key duplication compared to conventional pin tumbler locks.
Q: Is this lock core easy to install myself?
A: In most cases, yes. This is a standard replacement cylinder designed to swap directly into existing mortise lock bodies. Basic tools and a few minutes are typically all that's needed, though a professional locksmith can assist if your lock body has non-standard requirements.