Ensure precision and efficiency in your coolant-through machining with our Sealed ER Collets. Designed for use in through-spindle coolant systems, these collets feature an internal seal that prevents coolant leakage, maintaining consistent pressure and directing coolant straight through the cutting tool. Ideal for high-speed and deep-hole applications, they enhance tool life, improve chip evacuation, and deliver superior surface finishes. Compatible with all standard ER collet chucks.