Features:
【Effective Security】: This double lock door security cylinder is designed to effectively prevent breakage, collision, and drilling, ensuring maximum security for your entrance door.
【Anti-theft Function】: With an anti-theft function, this lock significantly enhances the reliability and safety of your door, providing you with peace of mind.
【Multi-way Lock Principle】: By adopting the multi-way lock principle, this cylinder prevents drilling locks and master keys from opening, offering an extra layer of protection.
【High-quality Material】: Made of high-quality aluminum alloy, this lock core is and resistant to rust, ensuring long-lasting performance.
【Easy Installation】: This security cylinder is easy to install and fits most entrance doors, making it convenient for both homeowners and locksmiths.

Specifications:
*Product Name: Double lock door security cylinder key anti-theft entrance door lock extension core
*Material: Aluminum alloy + copper
*Size: 70*29mm
*Color: silver, gold

Package Content:

1 x lock cylinder

3 x keys

1 x screw

Note:
1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.        

Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.

We only ship to confirmed ebay Order addresses. Please comfirm that your Order address is in line with your shipping address.

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

It takes about 7-15 working days to US; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us via "Ask seller a question" . We will reply your email within 24 working hours.