Absence makes the heart grow fonder, so they say. Proto is back in the game with the 2nd generation of its 4 inch full knucle SCS. If you ride SCS and need maximum clamping power, the Proto SCS is the SCS clamp for you. With its ageless design, we're not sure why it ever left the Proto lineup. The new SCS features M8 bolts for max clamping power and includes a shim for oversized or standard bars. With a full 2 inches of clamping power for both your bars and forks, the Proto Full Knuckle SCS is the strongest SCS compression system on the market, hands down. The Proto SCS is an aluminum SCS compression system. The 2nd generation of the Proto full size scs is a full size SCS because it is slightly larger than a baby SCS but provides maximum clamping power. The Proto SCS only works with SCS bars without a slit. While SCS compression is more expensive than other compression systems, it is the most effective compression system you can put on a pro scooter. The 2nd generation of the Proto full size scs was designed to work with standard outer diameter bars without a slit and cannot be modified to work with oversized bars. The Version 2 of the Proto full size SCS includes M8 bolts for maximum clamping power. M8 bolts are much less likely to strip than M6 bolts. It is a good practice with any compression bolt to tighten each bolt 1/2 turn at a time, one bolt at a time, until all bolts are completely tight. The Proto SCS works with the SCS compression ONLY.