Drill America DWDTL series, taper length drills are designed for general purpose drilling where a length longer than jobber length is required. Performs under a variety of normal conditions and in a broad range of materials in the iron and steel families. They are a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families. Ideal for production, maintenance or portable drilling jobs. Surface treated with abrasion-resistant black oxide.