The Proto Baby SCS is back and better than ever! After a couple year hiatus, the baby SCS is still 3" but now features M8 compression bolts for more clamping power, a spreader bolt for easier bar installation (no more crushed pennies), and, maybe the best part, is that it now includes a shim so you can ride it with either standard or oversized bars! The Proto SCS is a SCS compression system. The Proto SCS clamp 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 Proto SCS clamp includes a shim and works with both oversized and standard outer diameter Pro Scooter Bars without a slit. The Proto Baby 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.Weight - 0.53 lbs Material - Aluminum Total height - 3" Clamp Bolt Head Size/Type - 8mm, 6mm heads Shim/Hardware included - YES Bar size compatibility - Oversized and Standard (shim is included) Suitable Compressions - SCS Bolt count - 4 Available colors: BLACK, GOLD, SILVER