EBC Vee-Series Brake Disc VR633ORG. EBC vee-profile lightweight fully-floating discs are 100% British-made using billet alloy centre hubs attached to European mill-rolled, heat-treated and tempered stainless DB420 steel. The centre hubs are attached to the rotor ring using EBC’s patented SD-System (square drive) rivets that prevent distortion under heavy braking, making these a perfect replacement for original discs with a radical café style finish, coloured to your choice to match any bike’s finish. 1x VR633ORG EBC Brake Disc. Product Type: Brake Discs. Hole to Hole: 40mm. You can send us a message by using the “Questions and answers” section towards the bottom of the page.