* Using thread rings fixed different size optical components in a firmly position * Especially suitable for thin optical components. There is an M4 countersunk hole on both sides of base for easy fixing. * By rotating the stainless steel high precision screw to move forward * Oil is applied between the gaps, screw gap almost can be neglected * Stainless steel screw and bronze ring bushing combined together, make it more smoother operation and long-term stability * Using two stainless steel rods as sliding guide,make it more smoother and cheaper. * Avaliable for Maximum thickness of optical components: 4mm * Tip/Tilt Range:±3.5°