Threaded Backs

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      We offer you additional spare or replacement screw backs in various sizes.

      0.032 inch=0.81 mm      
      0.034 inch=0.86 mm
      0.039 inch=0.99 mm
      0.044 inch=1.117 mm

      Baby threaded post
      0.28 inch=0.71 mm
      0.03 inch=0.76 mm