Bearings 10PCS linear ball bearing bushing 10pcs/bag LMU / LM3 LM4UU LM5UU LM6UU LM8UU LM10UU LM12UU CNC and 3D printer parts High-concerned chemical : None Material : Bearing Steel Model Number : LM3 LM4UU LM5UU LM6UU LM8UU LM8SUU LM10UU LM12UU