Omega Products BT40 Shrink Fit Chuck - G2.5 - 25,000 RPM - 32mm - 100mm LongBT40 Shrink Fit Chucks are specially designed to provide a secure and precise tool holding solution for high speed machining applications. With a G2. 5 precision rating, these chucks offer excellent tool concentricity and minimal runout, ensuring accurate and consistent results. Operating at a maximum speed of 25,000 RPM, they are capable of handling demanding machining tasks with ease. The shrink fit design utilizes heat expansion to firmly grip the