Reid Select Drills

A drill blank is an unfinished cylindrical rod of tool steel, the starting material for making twist drill bits. It lacks the characteristic helical flutes and a finished shank. Drill manufacturers use these blanks to efficiently produce drills with specific dimensions, point geometries, and material qualities.

A screw machine drill is a short, rigid twist drill bit designed for accuracy and durability in automated machining like screw machines and CNCs. Its stubby length minimizes deflection, leading to more precise holes, especially in high-speed, repetitive operations. While sacrificing drilling depth, it offers improved control and is suitable for various materials.

A spotting drill is a short, stiff drill bit used to create a precise starting indentation for other drills. This prevents the final drill from wandering, ensuring accurate hole placement, especially on uneven surfaces. It often has a wider point angle (60, 90, or 120) and can sometimes create a starting chamfer. Using a spotting drill improves hole quality and extends the life of subsequent drill bits.