The Diablo 4-3/8 in. SDS-Plus Carbide Tipped Coring Drill Bit is a high-quality, single piece drill bit designed for cutting, grinding, and drilling tasks. Made of steel with a gray color finish, this German-manufactured drill bit is suitable for commercial use with applications such as air drills, air compressors, cement, and general drilling tasks. The Diablo brand is known for its top-notch products, earning a rating of 4.4 out of 5, making this drill bit a reliable choice for various cutting and grinding projects.