Features: Engineered with high speed steel, this 3 in 1 hexagonal shank spirals flute tap boosts cutting efficiency by 40%, combining drilling, threading, and deburring in one tool for industrial manufacturing. Its multifunction design integrates precise threading, smooth chip removal, and burr elimination, featurings a universal 1/4" hexagonal shank for seamlessly compatibility with power drill. Suitable for engineers, automotive technicians, and professional mechanics requiring precise (±0.01mm) thread creation in metalworking and machinery maintenance. Optimized for heavy duty workshop applications including automotive part fabrication, industrial equipment repair, and hardened metal materials processing. The spirals fluted geometry enhances chip evacuation during continuous operation, while the hardened steel construction withstands long lifespans than carbon steel taps. Specifications: Component: High-Speed Steel Shank: 1/4 Hexagonal Color:Silver,Gold Type:Short,Long Package Includes: 6Pcs Tap Drill Bit Set note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.