Quality LM12UU, LM12LUU or LME12UU Linear Bearing

Standard linear motion bearing with 12mm ID and 21mm OD with a length of 30mm
The LM12UU linear bearing is quality substitute to carbon steel Lishui lm10uu linear bearings. Longer life span and more precise option on hardened 12mm smooth rod. To find a reliable 12mm linear bearing for your Brand of 3D Printer, it's the choice.
LM12UU 12*21*30 Bearing
Type: Linear bearing
Lubrication: Oil or Grease
Dimensions:12mmx21mmx 30mm/Metric
ID (inner diameter)/Bore: 12mm
OD (outer diameter): 21mm
Width/Height/thickness: 30mm

Frame is made of ST14 steel, Retainer: Injection nylon, Ball Bearings: Gcr15 steel

LME12UU 12*22*32 Bearing
Type: Linear bearing
Lubrication: Oil or Grease
Dimensions:12mmx32mmx 32mm/Metric
ID (inner diameter)/Bore: 12mm
OD (outer diameter): 22mm
Width/Height/thickness: 32mm