the ROLLING LOCK is Bob Taylors gift to the knife world..In a folding knife lock strength is paramount, all one has to lose is ones fingers..The rollong lock UNLIKE other locks doesn't use friction to hold it in place. In a lock back a strip of steel slips into a spring held step..this step can wear or pop. In a liner the liner itself pops over and by friction is held in place..Since it comes out on an angle, the angle of the seat must match the angle of the liner and the length MUST be correct. Both are static locks. They are not mmade to take KINETIC energy. The rolling lock is based in concept like the magazine of an AK-47..its made to take kinetic force. The blade has a cam shaped notch in it. whhen the blade opens the cam slides inside the notch. The worst you can do is JAM the lock.
The lock will not fail. You can ruin the knife so it won't close but you can't break the lock. When the cam slides/ rolls into the notch its now the shear strength of steel not the friction of a holding a plate. To close the knife one must purposely Unengage the cam rotatingit out of the way, to close thre knife..If you like real time slice n dice or really use your knife, well you want a rolling lock.