Step Drill Bits and Twist Drill Bits in a Plastic Case.

This is a set of titanium-coated HSS step drill bits and twist drill bits in a plastic case. Designed for drilling holes in various materials including iron, aluminum, plastic, wood, and metal plates. The step bits feature a unique stepped design with sizes clearly marked on the bits themselves. The titanium coating enhances durability and provides wear resistance. The step bits have double spiral flutes to ensure rapid chip removal for a smoother drilling experience. The set includes various sizes, such as 4-12mm, 4-20mm, and 4-32mm step bits, along with smaller twist drill bits.