This TK Service Kit is compatible with -6k TK Trailer Axle - 6000 lb Idler 6 lugIdler Hub Only Specs:1 - 6k Hub Only - 6x5.5 Bolt Pattern1 - 15245 Outer Race 2.441" OD(Pre-Pressed In Hub)1 - 25520 Inner Race 3.265" OD(Pre-Pressed In Hub) Uses 25580 (1.75" ID) and 15123 (1.25" OD) bearings (sold separately)This 6K trailer axle hub features a 6 on 5.5' bolt pattern, and it's a quality option for a number of trailer types. If you have an old hub that's starting to wear out, or you want to build a brand new trailer that will serve you for years to come, then let The Trailer Parts Outlet provide you with quality products at affordable prices. The hub comes with the inner and outer races already pressed in, and we can supply the bearings, seals, caps, and nuts for your trailer. Order from our online catalog today to receive your parts quickly!Features:Our Hub has 6 on 5.5" Bolt Pattern for 6,000 lb AxlesRaces are pre-pressed into the hub for your convenienceThis hub is designed for use with a #42 spindleEach hub has a capacity of 3,000 lbsThe bearings, grease seal, grease cap, wheel nuts, spindle nut, and spindle washer sold separatelyKit with hardware is available