This proved to not only provided a sufficient amount of tension to keep the sprag from flipping, but held at the current power levels we were seeing at the time. As with anything we see, we knew it was only a matter of time before we would see the limits being pushed with our new design. Fast forward to 8 years later, and now this design has been copied and almost every retailer is selling their version of this design. The unfortunate aspect of this is that this design has reached its capacity with the power levels being reached in the new 6.7 Cummins, and we are seeing even the new design achieve catastrophic failure. However, we already were aware of this potential failure and have been hard at work with the patent office yet again. In all of our 68RFE units we now include our new Patent-Pending Billet M3GA sprag. This is an all-billet design, not the plastic stuff the competition wants to sell you. SunCoasts all-billet M3GA Sprag also includes a redesigned spring style to ensure the preload is sufficient to alleviate the problems. This new billet design is absolutely unbreakable and currently has a Patent Pending. Plastic or Billet? We will let you decide.