4pcs SBR12UU SBR16UU SBR20UU 12mm16mm 20mm Linear Ball Bearing Block CNC Router SBR16 SBR20 Linear rail CNC 3D printer part

4pcs SBR12UU SBR16UU SBR20UU 12mm16mm 20mm Linear Ball Bearing Block CNC Router SBR16 SBR20 Linear rail CNC 3D printer part
sku: 1005003171979526
$25.20
Shipping from: China
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