The Milwaukee Tool 48-17-3040 4" Diamond Premium Wet Core Bit is a high-quality drilling tool designed for precision cutting tasks. Featuring a diamond drill bit material, this 4-inch core bit is suitable for wet drilling and offers a maximum drilling depth of 4.5 inches. With a length of 18.6 inches and a weight of 7.2 pounds, this Milwaukee tool is durable and reliable for various industrial applications. The compact size and advanced features make it a valuable addition to any metalworking supplies collection.