Coolant Fed Twist Drills are used in drilling machines which feed coolant directly to the cutting edge during operation, reducing temperatures and flushing chips out of the hole for faster work, longer tool life and reduced downtime. Taper shank models have dual coolant entry in the tang end and the side of the taper, while straight shank models are used in appropriate coolant-fed toolholders. Large holes at the point end improve coolant flow to the workpiece for decreased friction and better chip removal. Suitable for a variety of stainless steels, cast iron, and other ferrous and non-ferrous metals and alloys. For best results when drilling under 3/8" diameter, use a drill bushing or pilot hole of the same dimension.