The ER20 collet adaptor for small milling rotary tables ensures high-quality precision with accuracy under 5 microns. It is designed to perfectly fit our 3" (80 mm) and 4" (100 mm) rotary tables, complete with fixing T nuts for secure installation. Featuring an epoxy black finish for long-lasting rust resistance, its versatile base plate accommodates both 3-slot and 4-slot rotary tables effortlessly. On one side, a 13.9 mm diameter locating spigot ensures automatic centering within the rotary table, eliminating the need for manual adjustment during setup. This adaptor is ideal for precise machining applications where reliability and accuracy are critical.