NOTICE: These are not the standard 8x16x5 that the majority of cars use, this is a special narrow size of 4mm.

The 8x16x4 688ZZ/B4 Halo series of bearings are a high quality steel/chrome bearing with metal shields. These bearings have been tested and proven by many racers. Please check your manual to see if these are bearings you need to use.

• METRIC: 8mm (Inner) x 16mm (Outer) x 4mm (Width)
• STANDARD: 0.31496" (Inner) x 0.62992" (Outer) x 0.15748" (Width)