1100% and high quality. 2Made of aluminium alloy material with black anodized surface, it is durable. 3This is a single X for linear guide sliding track. 4Accuracy machining and stable performance 5Widely used in production machinery, testing equipment, optical experimental measurement, fine-tuning displacement, precision positioning, quantitative movement, etc. Features: 1.100% and high quality 2.Made of aluminium alloy material with black anodized surface, it is durable. 3.This is a single X for linear guide sliding track.4.Precision machining and stable performance 5.Widely used in production machinery, testing equipment, optical experimental measurement, finetuning displacement, precision positioning, quantitative movement, etc. Specification: Condition: 100% Model:SEMX25AS Material:Aluminium Alloy(black anodized surface) Table Size: 25*25mm Load Resistance: 9.8N Stroke: 3.2mm Centimeter Card Accuracy: 0.01mm Parallelism: 30um Moving Parallelism: 10um True Straightness: 3um Moving Distance Adjustment: Micrometer Differential Head Sliding Track: Linear Guide Rail Type: Cross Roller Type Weight: Approx. 61g / 2.2oz Size: Approx. 50 * 40 * 15mm / 2.0 * 1.6 * 0.6in Package List: 1 * Linear Stages Note:New-style and old-style are randomly