Foose F099 Knuckle Textured Gray Spokes and Diamond Cut Lip 17x8 5/4.5 (5/114.3) Bolt Pattern 4.54" Backspace +1MM Offset 72.56MM Hub Bore one-piece cast aluminium direct bolt wheel with a modern take on 5 spoke muscle car design with a split spoke and smooth lip. The Grey Knuckle is a very popular rims for American classic cars, trucks and hot rods. Chip Foose, master builder and automotive designer, begins every wheel design from somewhere personal. Each wheel Chip designs has a story of its own to tell.