thumb lock cylinder
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Quality/Safety Certification: 0.00
1. applied to various key ways
2.have the anti-drilling , AB construction key function
3.adopts imported spring
A)Can be applied to various key slot type
B)Can apply to make to the function like anti-drilling , AB construction key and master key.
C)the lock cylinder adopts imported spring,
D)with perfect function of anti-granting.anti-burglary