BT Retention Knob with coolant

High Accuracy 16slot full radius contact design of Our ER collets Manufactured OnPrecision Machines ensures more accurate clamping with very low run-outtolerance (0.0006") and higher gripping strength than comparabletoolholding systems. Jobs are performed to fine tolerances without riskof cutters being pulled out destroying your precious work. Ease of OperationChanging a collet is fastAnd with a set of collets that covers a continuous range of metric aswell as imperial sizes you'll have every major size available for anyjob that may come to you. Versatile Samecollets can be used for drilling, milling, tapping etc. Smallermachines Z-axis travel distance is not reduced as much as when fittingdrill chucks and other adaptors. Long life Madeof high grade 1065 carbon steel, case hardened and precision groundwith 100% quality inspection For precision and long life Industrial standard DIN6499 standardization Means interchangeability between different brands and access to spares over time