The 9066-X Stainless Steel Crossed-Roller Translation Stage is a 0.5 inch travel linear translation stage that provides improved stability because the weight of these stainless steel stages is held by the actuator and not the spring. This provides the convenience of being able to use these X-configured stages in the Z configuration. 9066 series stages feature a generous pattern of eight 4-40. ten 8-32 and three 1/4-20 threaded mounting holes. Actuators are not included. Please see specifications for recommended actuators.