Upgrade your trailer's performance with this premium 5-bolt on 4-1/2" hub kit designed for reliable towing. This comprehensive kit features a robust hub assembly with 5 bolts arranged in a 4-1/2" inch circle pattern and accommodates 1-inch I.D. bearings. The package includes all essential components: a durable black-finished hub, high-quality tapered roller bearings, a protective grease seal, a dust cap, and necessary mounting hardware. Perfect for trailer maintenance or replacement, this hub kit ensures smooth wheel rotation and proper load distribution. The heavy-duty construction and precision engineering make it ideal for various trailer applications. Each kit contains two complete hub assemblies for a pair of wheels, providing everything needed for a proper installation. Compatible with standard 5-bolt on 4-1/2" wheel patterns with a 1" spindle, this hub kit delivers dependable performance for your trailering needs. Hub has 5-bolt pattern on 4-1/2" circle. Hub assembly includes (4) L-44643 inner and outer bearings, (2) SL-122 double lipped (1.249" I.D.) grease seals, (2) SCP-100 cotter pin, (2) DC-1505 dust cap, (10) STN-506 lug nuts and pressed in bearing races. Pilot diameter 2.5 inches, flange diameter 5.56 inches. PLEASE NOTE: This kit will only fit trailer spindles that have a 1" bearing surface with a 1.25" seal surface. If you have any questions before ordering - call or email us, we can assist if you have a different spindle/seal size.