- Nylon retainers (for minimal friction and ultimately more speed) - Blackened chrome steal casings (less chance of rust) - Non-contact, frictionless blue rubber shields on both sides to protect from dirt while still easily removable for cleaning - Superfinished chromium steel Abec 7 precision balls - Lubricated with low viscosity skateboard specific synthetic oil (not the thick grease, that many cheap bearings you'll find come lubed with, which in turn slows down the bearings) - Design and quality make these bad boys competition to the most recognized brand names in the industry