D. B. Shah & Brothers offers. D. B. Shah & Brothers manufactures different types of high precision tools and instruments. The Carbide Tipped Hole Saws are also known as a hole cutters. These are circular saws designed to cut through relatively thin work pieces. It is used in a drill. The Carbide Tipped Hole Saws are bi-metal hole saws, constructed of hardened, heat and abrasion resisting high speed steel teeth with a tough alloy body and cap. This gives them exceptional strength, durability and shatter resistance for user safety. The Carbide Tipped Hole Saws cuts any type of wood, metal or plastic in either a hand -held drill or a drill press. These saws have carbide tipped, carbide grit and diamond coated hole saws.