All you need to know about the Wafer Handling End Effector and the Wafer Cassette Mapping The End Effectors or the wafer handling end-effectors are the general terms that have been used for the robot wrist installation. The alternative names of End-effectors are robot peripherals and EOAT, i.e., End of Arm Tooling. There are several types of end effectors that are used to handle the SCARA wafer robots.