56142W
https://www.vfoverride.com/shop/56142w-238485
https://www.vfoverride.com/web/image/product.template/238485/image_1920?unique=83be79a
4 FL - Ball - 0.2500" (1/4) Cutter DIA x 0.2500" (1/4) Shank DIA x 0.5000" (1/2) LOC x 2.5000" (2-1/2) OAL - APLUS Coated