Marine-grade hub is designed for trailer idler axles. Fits 2.5K axles . Inner bearing (L44649) and race, outer bearing (L44649) and race, grease seal, super lube cap, and nuts included. Features: Marine-grade trailer hub assembly fits idler axles Bearings, races, seal, grease cap, and lug nuts are included Easy Grease-compatible grease cap makes lubricating bearings fast and easy Remove rubber plug to access zerk fitting on spindle - no need to disassemble hub Sturdy iron construction Galvanized finish offers excellent corrosion resistance Ideal for use on a boat or snowmobile trailer QAI and CSA certified Specs: Application: 2,500-lb axle Compatible with standard axles from most manufacturers, including Dexter, Lippert (LCI), and AL-KO Wheel size: 10" to 12" Bolt pattern: 5 on 4-1/2" Wheel stud dimensions: 1/2" diameter x 1-5/16" long Grease cap flange diameter: 1.99" Weight capacity: 1,250 lbs. Bearing, Race, and Seal Information Bearings (included) Inner bearing: L44649 (1.063" inner diameter) Outer bearing: L44649 (1.063" inner diameter) Races (included) Inner race: L44610 Outer race: L44610 Grease seal (included): GS-100 Inner diameter: 1.25" Outer diameter: 1.987" E-Z Lube, Super Lube and Easy Grease-Compatible Hub for Simple Lubrication