Specs: 

• 1 25520 Race (Already Pressed In) 3.265"
• 1 15245 Race (Already Pressed In) 2.441"
• 1/2" Studs (Already Pressed In)
• Uses 25580(1.75" ID) and 15123(1.25" ID) bearings (sold separately)
• 6 on 5.5" Bolt Pattern
• Use with a 12" x 2" brake

Features:  

• 12"x2" Hub & Drum with 6 on 5.5" Bolt Pattern For 6,000lb Axles
• Hub & drum comes with races pre-pressed for your convenience
• This hub & drum uses #42 spindle (sold separately)  
• Each hub has a 3,000 lb capacity
• The bearings, grease seal, grease cap, wheel nuts, spindle nut, and spindle washer sold separately
• Kit with hardware is available