3 X 1-3/4 X 2-3/8" Cast Iron V Block Set (3402-1001) ~ Made of high quality casting, properly seasoned against distortion. ~ Machined square and parallel to meet standard specifications. ~ Supplied in a matched pair. ~ A is 3". ~ B is 1-3/4". ~ C is 2-3/8". ~ D is 1-5/16".