1 4 x 11 1 4 x 9 1 4 T sloted Set up block 17161

  For sale is a 71-/4 x 11-1/4 x 9-1/4 T-sloted Set up block; 
  T-slots are 1" on bottom and 5/8 on top
  Holes are from 1/2" to 7/8"

(Click on the thumbnail images to enlarge)