Quality LM12UU, LM12LUU or LME12UU Linear BearingStandard linear motion bearing with 12mm ID and 21mm OD with a length of 30mm The LM12UU linear bearing is quality substLM12UU | Linear Bushing LM Type | THK | MISUMI USALinear Bushing LM Type of THK,LM12UU, Check out the variety of configurable, Linear Bushing LM Type of THK,LM12UU,MISUMI has other mechanical 
LM12UU Linear Motion 12mm Ball Bushing - VXB Ball BearingsLM12UU Linear Motion Bushing works with a 12mm Shafts, the inner Diameter is 12mm, the outer Diameter is 21mm and the Length is 30mm, Bearing has LM12UU linear motion ball bearings 12x21x30 mm LM12LM12UU Linear Motion Ball Bearing CNC Slide Bushing.  uxcell LM12UU Linear Ball Bearings, 12mm Bore Dia, 21mm OD, 30mm Length (Pack of 4)  JSB Great Bearings: **Linear Ball Bearing ***Dimension d (Inside) Bore 12 mm D (Outside) 21 mm L (Length) 30 mmLM12UU Linear Motion Ball Bearing CNC Slide BushingOur linear bearings are the perfect compliment to your industrial, commercial or DIY project. These linear bearings use recirculating balls in order to provide