3d printer Lead screw/ nut block

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{"cid":"135340","pid":"23874883","pimg_url":"\/\/img1.b2bforus.com\/90\/30\/f26e7173bf9b\/product\/82114836_s-w400xh400.jpg","name":"Smooth and low noise and high speed cnc kits 12mm start T12*8 4 ss304 trapezoidl lead screw for 3d printer","attrs":{"Price":"Negotiable","MOQ":"1.0 Pieces","Delivery Time":"Negotiable","Brand":"win3d"}}