3X 200mm Aluminum Polyurethane Industrial Encoder Wheel Measuring Wheel for Measuring Encoder

Inner hole size: 6mm Perimeter: 200mm 1.Use with encoder to measure velocity and position 2.It have high resolution Package include: 3 * Encoder wheel Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.