Don't worry about adaptation. Trailer Hub Kit 1 Sets 5 Bolt 4.5, Trailer Axle Kit For 2000 Lb 5 5 Lug 4.5 Hub Kit For 2000lb Axle With Bearings Fits both 1 and 1-1/16 diameter straight spindles., With 1pcs 1., 25 ID and 1pcs 1., 5 ID grease seal. 【LUXURY KIT WITH EXTRA ACCESSORIES】This trailer hub kit includes 17pcs accessories units such as Idler hub, L44649 bearings, L44643 bearings, etc., It even includes 1., 5 and 1., 25 Grease seal, Cotter Pin. 【HIGH QUALITY】The hub is made of high quality carbon steel. WITH EXTRA 1PCS DUST CAPS & 2PCS SEALS. 【FIT】For trailer idler hub 5 on 4., 5 for 2,000 lbs trailer axle. Effectively avoid damage due to parts colliding with each other in the box. 【WELL PACKING 】The parts are individually packed in bubble bags. RD-2000545 Trailer Spindle Kit, rated for 2,000 lbs, includes 5-on-4.5 hub, bearings, and hardware for reliable trailer axle repairs or builds Designed specifically for trailers with 1-1/16' to 1-3/8' axles (that's the #84 spindle EZ-Lube type), this complete set comes with everything you need - hubs... 【SIZE & QUANTITY】1PCS Hub(5 bolt 4., 5 for 2000lb), 2PCS L44649 bearings (I. AJANTA INDUSTRIAL 2000lb Trailer Axle Trailer Hub Kit 5 Bolt 4.5 Packed in a heavy duty box. Please do not hesitate to contact us if you have any questions.