Features: 1. 100% brand new and high quality. 2. Made of aluminium alloy material with black anodized surface,it is durable. 3. This is a single X linear guide sliding track. 4. Precision machining and stable performance, good using effect. 5. Suitable for laboratory precision inspection, mechanical equipment positioning and movement. Specification: Condition: 100% Brand New Item Type: Linear Stages Model: SEMX80-AS Material: Aluminum Alloy (Black Anodized) Moving Distance Adjustment: Micrometer Differential Head Sliding Track: Linear Guide Rail Type: Cross Roller Type Table Size: Approx. 80 * 80mm / 3.1 * 3.1in Load Resistance: 98.0N Stroke: 12.5mm Centimeter Card Accuracy: 0.01mm Parallelism: 30m Moving Parallelism: 10m True Straightness: 3m Product Size: Approx. 111 * 113.5 * 20mm / 4.4 * 4.5 * 0.8in Package list: 1 * Linear Stage Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List 1100% brand new and high quality. 2Made of aluminium alloy material with black anodized surface,it is durable. 3This is a single X linear guide sliding track. 4Precision machining and stable performance, good using effect. 5Suitable for laboratory precision inspection, mechanical equipment positioning and movement.