Precision Twist Drill 6001721 #21 HSS Jobber Length Drill Bit

The Precision Twist Drill 6001721 is a #21 wire gauge, high-speed steel (HSS) jobber-length drill bit designed for reliable, accurate drilling in a wide range of materials including steel, aluminum, brass, cast iron, and other metals. Precision Twist Drill has been a trusted name in cutting tools since 1882, and this bit upholds that legacy with consistent geometry and durable construction.

Key Features:

• Wire Gauge Size: #21 (0.1590" diameter)
• Construction: High-speed steel (HSS) for heat and wear resistance
• Point Angle: 118° conventional point for general-purpose drilling
• Length Style: Jobber length — the industry-standard length for versatility and rigidity
• Flute Style: Standard spiral flute for efficient chip evacuation
• Shank: Straight shank for compatibility with standard drill chucks
• Finish: Bright (uncoated) finish

This drill bit is well-suited for production, maintenance, and repair applications. The jobber-length design provides the ideal balance of reach and rigidity, minimizing deflection and improving hole accuracy. Compatible with standard drill presses, hand drills, and CNC equipment.