Got a trailer axle that needs rebuilding? This pack of two complete axle kits has everything you need. Each kit includes a 4 on 4\ bolt pattern idler hub (with lug nuts), a 1\ diameter round BT8 spindle (with castle nut and pin), plus the inner/outer bearings, grease seal, and dust cap. Each hub is rated for 1,250 lbs, so the pair is perfect for a 2,000 lb axle setup. These are designed to fit straight spindles of standard length (not short spindles). Super important: Before you buy, check your existing bearings! These kits come with bearings for a 1\ spindle. Make sure your current bearing sizes match, and confirm your spindle is the standard 8 3/4\ length with a 4\ long stub. Saves a ton of time versus buying parts separately.