4" 1-1/2" 8 Threaded 3-Jaw Backplate Assembly instructions included. D is 4". D2 is 10 2.90". Bolt circle is 3.3". Number of bolt holes is 3.

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4" 1-1/2" 8 Threaded 3-Jaw Backplate Assembly instructions included. D is 4". D2 is 10 2.90". Bolt circle is 3.3". Number of bolt holes is 3.

  • Must be machined for concentricity
  • Model Number: 3900-3212
  • Item Package Dimension: 3.0" L x 6.0" W x 3.0" H
  • Item Package Weight: 2.6 lb
  • Must be machined for concentricity
  • Model Number: 3900-3212
  • Item Package Dimension: 3.0" L x 6.0" W x 3.0" H
  • Item Package Weight: 2.6 lb