Nut Model: T10×2, T12×3, T14×3, T16×4, T20×4,T22×5,T25x5, T28x5, T30x6, T32x6, T36×6, T40×8. DH Double Sided Tooth Timing Belt Closed Loop Rubber Belt for CNC 3D Printer. Material: Solid Brass. Good quality.
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