?Apply to?2000lb trailer Hub Kit boat trailer hub kit with 5 Bolt 4.5 trailer axle wheel hub Fits both 1" and 1-1/16" diameter Straight Spindle. ?Not Fit tapered spindles?with 2pcs 1.25" ID and 2pcs 1.5" ID grease seal. with L44643 bearings (for 1''axle), L44649 bearings (for 1-1/16'' axle),Don't worry about adaptation. ?What you will Get?2pcs hub kits (5 bolts 4.5 for 2000lbs), 4pcs L44649 bearings (I.D: 1-1/16"), 4pcs L44643 bearings (I.D: 1"), 10pcs Lug nuts (1/2"-20 threads), 4pcs dust caps (O.D: 1.98"),2pcs grease seals (O.D 1.98" - I.D 1.25"). 2pcs grease seals (O.D 1.98" - I.D 1.5"),2pcs cotter pins (Length: 2.3") ?High Quality?2000lb Trailer hub kit 5 bolts 4.5,and the length from the OUTERMOST point of a hole TO the CENTER of another hole is 4.5".in strict accordance with the US standard production,using high-quality materials.With excellent strength and rigidity,as well as better heat transfer performance,has a longer service life. ?Sturdy & Anti-Rust?5x4.5 trailer hub kit is coated in black and tested with 180h salt spray test to prevent corrosion and rust. Dust cover surface galvanized,not only beautiful but also wear-resistant. The hardness standard of the Lug nuts is 10.9,which solves the fracture problem well. Bearing high-quality steel,low noise and reduce the coefficient of friction of the wheel hub,completely solve the problem of trailer spindle shaking and oil leakage. ?Pre-Assembled & Pre Lubrication?The L44649 bearings and 1.25" I.D. grease seals are pre-assembled and lubricated with grease.This kit includes all the necessary parts for installation, you can directly install them on the trailer axle.You don't have to go anywhere else to buy parts.