one pc conversion adapter 4-lug-5-lug 

4-114.3/5-114.3, 4-100/5-100 one pc style, can be 20 thickness, much thinner and lighter than common two pieces convert adapter, with specially made studs and small nuts, need special socket for special nuts. Xiangsheng wheel bolt-on adapters are made from high quality AL 6061 by CNC, Each adapter comes with 40CrMo made class 10.9 high strength knurl studs, and open end lug nuts, common thread M12x1.5, M12x1.25, M14x1.5, 1/2x20, 9/16-18, M14x2.0, studs length are 45mm, 51mm, 57mm, 70mm, strong studs pressed through the adapters. Conversion adapter popular width are 38mm, 50mm, 76mm, or1.5", 2", 3", and any thickness are available according to special request. Adapters let you bolt on rims with different offsets and lug nut holes.