precision skateboard wheel bearings for electric skateboard1.The feature⑴The imported Bearing no.:NMB 608zz,⑵there are two bearings in the wheel, the advantage: good bearable, excellent smooth performance, good water proof.⑶there are preventive cover in two side of the bearing,so it is well used to skate in any weather condition and increase the resisting force while riding.2.product detail picture3.Packing