Grant offers quick release hubs for quick removal and remount of our wheels. Grant Quick Release Hubs are manufactured from aircraft quality billet aluminum. Parts are precision CNC machined to exacting standards to provide the finest quality quick release hubs available. These parts are designed for off-road use only. Not legal for street use. The 3023 is a pinless quick release and it fits Grant 5-bolt pattern wheels. **This kit is to weld on to 5/8" shafts.** All Grant Pinless Quick Release Hubs meet the SFI 42.1 specification. This is a NHRA mandatory specification.