Since the first patent of pin tumbler lock was given to Linus Yale Sr. , co-founder of Yale company, it has been more than 200 hundred years that pin tumbler lock is widely used on doors. Till now, no changes on the security. 

Of course we can do, it is customized service. Regular color option from production line is brass plated, chrome plated, stain nickel, antique brass, antique copper. You can contact us by email and let us know the details of your requirement. 

Firstly, the cost of aluminum and zinc cylinder is cheaper than brass cylinder.  Secondly, the appearance of. Thirdly, the material of iron is harder than brass, so it will be a case that the keys works on iron cylinder not as smooth as on brass cylinder if some burrs inside of cylinder. 

It is 360 degree rotation. 

Wafer lock utilizes a set of flat wafers to stop the lock from opening unless a specific key was used. Pin tumbler lock utilize a set of pins and springs to combined to stop the lock from opening. 

Pin tumbler lock has been widely produced and assembled by auto-machine, but wafer lock still be done by labors.   

“Paracentric” or “Universal”, which is most common profile, has the classic rounded “S” shape. Viro is also available by special request. 

Yes, Euro cylinder lock LC004 can be provided with master key system. 

Most common one is 5 pins each side of lock body. 6 pins is also available. 

Specialized manufacturer in the line of making cylinder lock more than 20 years. Third-part inspection involve in the quality check. Thirdly, our own packing factory double check the quality on each single product before putting into package. 

Same key number is packed in one carton.