General description This 51-piece Engineering Drill Bit Set is crafted from high-speed steel (HSS) and designed for true engineering quality. Each drill 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 general use on wood, metal, and plastics. The bits range in size from 1mm to 6mm, increasing in 0.1mm increments, and come in a convenient 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 Color: Silver Package Contents 51 x drill bits 1 x carry case (color random) Other information