8-1/4" A2-5 MOUNT BACK PLATE FOR 3 JAW CHUCKS (3900-4841)

8-1/4" A2-5 Mount Back Plate for 3-Jaw Chucks Semi-finished back plate for universal chucks. Plain-back chucks require the adapter plate to be machined before mounting to ensure concentricity. Made of high grade casting steel. Shipping Weight: 13.7 lbs