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4PCS Updated UM3 Ultimaker 2 Aluminum Alloy Frosted Slide Cross Block + Graphite Copper Sleeve For 3D Printer Part
Specifications: Material: Aluminum Alloy Application: Fit in Cross shaft 6mm, Transimission shaft 8mm of Ultimaker 3D Printer. Fit for: 3D printer Graphite copper sleeves are less friction force and smoother than common copper sleeves. Note: Timing belt is not included. Package Included: 4x Slide Cross Block 4x Graphite Copper Sleeve