Small tools Introduction  Coolant-Through turning holders Screw clamp JCT Double-coolant hole design delivers an ample supply of coolant to the tool edge Excellent chip control and longer tool life E 1 Superior chip controlperformance 2 Sufficient cooling of the cuttingedge leads to longer tool life Double coolant hole design provides coolant to the insert cutting edge surface Double coolant holes Provides stable chip curls Superior chip control The cutting edge stays cool Long tool life Insert cross-section Coolant system comparison (Internal evaluation) Screw clamp JCT holder Competitor holder A Discharges coolant down into the chip forcing the Discharges coolant towards the chips chip into the part Chip evacuation direction Coolant system Chip evacuation direction Superior chip control Excellent: Provides stable chip curls Poor: Chip becomes unstable Coolant effects Excellent: Ensures proper cooling of the cutting edge Poor: Chip can obstruct coolant supply E4