Description:

HHIP 4" 1". 10 threaded back plate for a 4-jaw chucks fits most plain back chucks. Must be machined for concentricity. Made of high grade casting steel. Assembly instructions included. D is 4". z-d is 1". 8. D2 is 2. 90". bolt circle is 3. 3". number of bolt holes is 4. Model # 3900-4142 Features: Fits most plain back chucks Must be machined for concentricity Made of high grade casting steel Assembly instructions included Item Dimensions: 4" L x 8" W x 4" H.