The "Big Roc 828 Wrench" likely refers to a wrench tool produced or branded by the company Big Roc Tools. Wrenches are hand tools used for turning nuts and bolts, and they come in various sizes and types for different applications. If you have specific questions about the Big Roc 828 Wrench or if you need information about its features or usage, it's recommended to check the product documentation or contact the manufacturer or seller for accurate details.