General description This product is a high-security Euro profile double cylinder lock suitable for wooden, aluminum, and PVCu doors. It features a precision mushroom pin and paracentric keyway for enhanced anti-pick protection. The lock includes hardened steel anti-drill pins and springs, with eight anti-drill pins in each keyway, providing robust security. The lock allows for convenient operation with an external key that can also operate the lock from the inside when an internal key is in place. Technical specifications Size: 40 x 50 mm Overall length: 90 mm Finish: Nickel plated Includes: 2 keys Hardened steel anti-drill pins and springs 8 anti-drill pins per keyway Compatibility and accessories Compatible with wooden, aluminum, and PVCu doors that accept Euro profile cylinders Suitable for doors requiring double cylinder locks Installation Measure the distance from the internal end of the cylinder to the center of the cam (A) Measure the distance from the external end of the