1、Main body is made of aluminum alloy material, which is light weight 2、Strong, friction-resistant and silent, possess scratch-resistant, drop-resistant, and corrosion-resistant 3、Gear rotation handle control, dovetail groove type guide rail, come with high accuracy, smoothness, high load resistance, and stable movement 4、X‑axis linear stage provide R angle protection, which guarantee safety 5、Gear + rack type knob, you can manually rotate the knob to advance the gear drive 1 x X-Axis Linear Stage Item Type: X-Axis Linear StageModel: HB-A90Table Size: Approx. 90 x 40mm / 3.5 x 1.6inMoving Direction: X axis 1 directionBody Material: Aluminum alloy (black anodized)Drive Mode: Manually rotate the knob to advance the gear drive (gear + rack)Sliding Track: Rack guideRail Type: Dovetail groove typeNumber of Threaded Mounting Holes on the Countertop: 10Threaded Mounting Hole Diameter: Approx. 4mm / 0.2inThreaded Mounting Hole Depth: Approx. 7.5mm / 0.3inHorizontal Load Resistance: 39.2NMoving Stroke: ± Approx. 35mm / 1.4inMinimum Scale: 0.01mmStraightness: 0.03mm