The Mavic Hub Bearings Front M40078 (LM4007800) are high-quality replacement bearings designed specifically for Mavic wheels with a 700C wheel size. Made by the reputable brand Mavic, these bearings are essential components for ensuring smooth and reliable performance of your cycling wheels. Perfect for cyclists looking to maintain the optimal condition of their wheels, these bearings are a reliable and durable choice for enhancing your biking experience. These are new and unopened, I brought for a set of wheels that I sold before I had the chance to replace the bearings.