... .• Options1) Y/U/V /H groove, 2) single or double bearing.3) diameters: 50, 60, 70, 80, 90, 100, ... D mmWEIGHT(g)HD1V50x2050289HD1V5050267HD1V6058361HD1V7068720HD1V8078793HD1V90881025HD1V100981300HD1V1201182185HD1V1401382950 Wheel with Interior Bracket(Single Bearing, U Groove)NO.D mmWEIGHT(g)HD1U50x2050289HD1U5050267HD1U6058361HD1U7068720HD1U8078796HD1U90881025HD1U100981300HD1U80R1078 HD1U90R1088 ...