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Best Choice New DollaTek 10pcs LM8UU 8x15x24mm Double Side Rubber Seal Linear Motion Ball Bearing Double Side Rubber Seal Linear Motion Ball Bearing .Best Value New sourcing map 12pcs LM4UU Linear Ball Bearings, 4mm Bore Dia, 8mm OD,12mm Length, Linear Motion Bearing for CNC Machine T Package Included: 12pcs Metric Double Seal Linear Bearing; Model: LM4UU, Bore Diameter (dr): 4mm, Outer Diameter (D): 8mNew sourcing map SCS8UU Linear Ball Bearing Slide Block Units, 8mm Bore Dia (Pack of 4) Model: SCS8UU (Bearing No.: LMF8UU, Nominal Shaft Diamter (dr): 8mm)New iYueMps linear Rail Set,2pcs 8mm 350mm Linear Rod Rail Shaft Optical Axis, 4 Pcs SK8 Aluminum Rail Horizontal Bracket, 4 ★This linear motion shaft of 8 mm in diameter and in different Length is steel plated and case hardened, and is suitableNew YINETTECH 4Pcs SCS20UU Linear Motion Ball Bearings Sliders Carriage Block Slide Bushing 20mm Bore 50mm Length for CNC 3D [Type]: This is a SCS20UU linear motion ball bearings, fits for 20mm round shaft.New MEETOZ 12pcs LM8UU Linear Bearings for 3D Printer, RepRap Prusa Mendel DIY CNC Motion, Prusa Mendel, Reprap(8mm x 15mm x 12 LM8UU Linear BearingsNew EMSea RJ4JP-01-08 Drylin Linear Bearing 3D Printer Replacement LM8UU Bearing 8mm Inner Shaft 15mm Outer Diameter 24mm Le 8 mm inner diameter.New sourcing map 4Pcs LM8UU Linear Bearing 8mm Bore 15mm OD 24mm Length Linear Ball Bearings Nickel Plated Surface Double Si TWO RUBBER SEALS FOR DUSTPROOF: These ball bearings are dust-sealed with two rubber seals to prevent the ingress of dirtNew 200mm MGN12 Miniature Linear Rail Guide + MGN12H Sliding Block Linear Motion Guide Rail Slider Bearing Steel Carriage Bl MGN12 Carriage Blocks Made of metal Material, stable performance, high precision, work for long time.New VEVOR Linear Guide Rail Set, SBR20 1500mm, 2 PCS 59 in/1500 mm SBR20 Guide Rails and 4 PCS SBR20UU Slide Blocks, Linear SBR Linear Guide Rail Set: SBR20-1500 mm Linear motion guide rail includes 2 x 59 in/1500 mm length SBR20 guide rails an