2pcs/lot SBR12UU SBR16UU SBR20UU 12mm16mm 20mm Linear Ball Bearing Block CNC Router SBR16 SBR20 Linear rail CNC 3D printer part

2pcs/lot SBR12UU SBR16UU SBR20UU 12mm16mm 20mm Linear Ball Bearing Block CNC Router SBR16 SBR20 Linear rail CNC 3D printer part
sku: 1005001619729583
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$7.20
Shipping from: China
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