1. application: for aluminium or UPVC doors. Use with double sided handle and cylinder to form a safe one-point locking system.
2. backset size: 42mm
3.cylinder size: 63mm, key one both sides.
4. material: body-iron;outside cylinder-zinc alloy;inside cylinder-brass;keys-brass
5. finish: bule zinc
6. color: bule zinc
7. testing: 50000 times opening and closing test
8. life time: about 10 years
9. OEM service offered
10. best after-sales service
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