Bimba-mead air linear guided slide mtcl-16x175-s-t, ball brg, m5x0.Bimba-Mead Air Linear Guided Slide, Ball BRG, M5X0.08 non-rotate tolerance 16mm cylinder bore 175mm cylinder stroke ball bearing guided style The thrusters can be mounted with screws from the top, bottom, or base or by using t-slots on the bottom.