The best SCS in the world! Made in the USA ! Therefore, the first SCS comp came. system. The SCS has a fifth screw that is used to expand the SCS. This makes disassembling and assembling the SCS easy and you don't need a 5-pin or a washer. SCS is for steel handlebars only . (for diameters of 32 mm ). SCS also has an Offset split (the notch in SCS is not in the middle, but on the side). Thanks to this, the threads for the screw are longer and more resistant to tearing.