by pinsetter » 20 May 2006 11:39
As stated, Best locks use SFIC design. What this means is that there are 2 shear lines in the locks. Not only can the plug itself rotate with 1 key, but another key could be used that would rotate the plug and another rotating cylinder together. You can think of it as a plug inside another plug. There are 3 pins per stack, and yep, there are 7 stacks, so things get really hairy when trying to pick this with standard tools. These locks are made for masterkeying, but are much more secure than standard masterinkeying because of multiple shear lines. They *can* be picked with standard tools, but it isn't an easy task and can get real time consuming.