The Hercules 1-29 64 Twist Drill features a Morse Taper MT4 shank and a 12-1/4" overall length, designed for MT4-spindle machines such as drill presses and lathes. The diameter indicated in the product title as 1-29 64 identifies this twist drill’s size, aligning with standard twist-drill geometry for metal drilling. This MT4 twist drill is built for use in metalworking applications where an MT4 tooling interface is required.
