The "square edges" or "rounded edges" refers to the outer edges of the rotor

Fox Boost (15x110) 61g

5mm thickness provides the perfect compromise between comfort and control

XTR BR-M9120

Use whichever chain lube you like

Bell Sixer MIPS Helmet - L - Fasthouse Matte White - Black - AS-NZS 2063-2008 Standard eBay The "square edges" or "roundedThe Bell Sixer MIPS Helmet is your new best friend on the trail. This is a trail helmet that's designed to ventilate well, sit close and comfortably on your head, while providing the exceptional impact protection that comes from the integrated MIPS system. It's kitted out with Bell's proprietary Sweat Guide to keep you super comfortable no matter how hard you're slogging. You can also take this thing full enduro and slap on goggles the Bell Sixer MIPS