This is a pair of 6x30 to 17mm Aluminum Hex Adapters. Do you want to upgrade your Raid 6x30 Removable Hex Wheels with super strong aluminum instead of plastic? Then you came to the right place! This pack contains a pair of 17mm Hexes made from clear anodized Aluminum for your 6x30 2.8" wheels. If you love to put a massive amount of power down and are always stripping your plastic hexes, then you need the durability that Aluminum Hexes provide.