When your old has been damaged or has wiring issues, get one spare for spare, its leveling accuracy is sufficient to meet the requirements of 3D printing and effectively solves the first layer adhesion problem. Easy to install, please follow the official or our picture showing. Please note: requires calibration after installation. Cable length: 4-wire full bridge, 6cm/2.3 inch. Stand pressure weight: about 30KG/ 66lbs, can quickly respond to changes in the hot bed and the smooth progress of the printing process. Color:As Shown Material:Plastic+Metal Package Contents: 5 * Strain Gauge Only the above package content, other products are not included. Note: Light reflection 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.