The Lishi 2-in-1 style of pick has captivated many security professionals and amateurs alike, but what exactly is this new "SC20" model that we've been seeing pop up? Is there an "SC20" lock? No. This tool is based on the SC20 style of key. So what's that? In this video, we discuss the many keyways and lock designs that exist in the classic series of Schlage products. This will help you understand how and where the new Lishi pick tool can be used and whether it's something you think you need or not. Video from Relcross