These foam blocks are for the 3-5 arrow hoods that we make. The 3 arrow hood dimensions are 2″ x 2.25″ x 2″deep, 4 arrow standard are 2″ x 2.5″ x 2.25″ deep, J-1 are 2″ x 2.75″ x 2.5″ deep, J-2 are 2″ x 3″ x 2.75″ deep, and the largest 4 or 5 arrow Chief size are 2″ x 3.5″ x 3″ deep. The first two dimensions are at the surface of the foam. They are tapered .