General description This 51-piece Engineering Drill Bit Set is crafted from high-speed steel (HSS) and designed for true engineering quality. Each bit is precision ground and heat treated, ensuring exceptional strength and durability. The set features a 135-degree split point design for aggressive drilling, making it suitable for use on wood, metal, and plastics. The bits range in size from 1mm to 6mm in 0.1mm increments, providing versatility for various applications. The set comes in a handy carry case for organized storage. Technical specifications Material: High-speed steel (HSS) Size range: 1mm to 6mm in 0.1mm increments Point design: 135-degree split point Package contents: 51 drill bits, 1 carry case Measurement allowed error: +/- 1-3cm