As a loyal Automotive enthusiast, I purchased this screwdriver with high hopes... However, as a result of my tests, I determined that its non-slip feature is not reliable. While it did provide some grip initially, it began to slip after a few uses, which is unacceptable for a safety critical hand tool. The only positive aspect I can say is that it was easy to grip initially. Unfortunately, I cannot recommend this screwdriver for any serious Automotive work due to its unreliable non-slip feature.See full review