These toolholders are made for the TeknoMotor ATC71. They should also work in HSD ES915 and other ISO30 machines. But when working with 24000 rpm , always verify the fit is 100% correct. Be very careful when using other standard ISO30 toolholders in ATC71 motor, since most are only balanced up to 8000RPM. This can cause bearing damage to the milling motor. For this reason we always advise to use the type we offer here, which is really made for this job. • Toolholder ISO30 according to DIN69871
• Precision class: AT3 Dynamic balancing: G2.5 (ISO1940) @ 24000rpm
• Includes pullstud (TeknoMotor/HSD/ELTE compatible)
• Includes balanced ER32 collet nut
• Colletsize: ER32