The Area 419 Billet Anodized Loading block is machined from 6061-T6 Aluminum. Dimensions are 9.5″ x 4″ x 5/8″. Holes are 0.500″ deep and are a tight fit around the case to prevent tipping over. Hole bottoms have a small “divot” in the very center to catch powder kernels and prevent any possible accidents with primers. Features rubber pads on the bottom to keep from sliding around.