CNCCANEN SBR12 4Pcs Linear Bearing Aluminum Open Linear Motion 12mm Bearing Slide Unit for SBR12UU Linear Slide Rail Guide CNC: Amazon.com: Industrial & Scientific
QWORK 2Pcs SCS12LUU Aluminum Linear Motion Ball Bearing Slide Unit Bushing, Type CNC Extra Long Linear Roller Bearing Slide Block, 12mm Bore Dia: Amazon.com: Industrial & Scientific