Rolled thread linear guides and slides BRH15B linear guides and slides: 15, 20, 25, 30, 1Heavy load 2Low noise 3high speed 4high accuracy Max. Length: 4000m Linear guides and slides ( linear guides),linear guide way 1.Adjustable pressure:"ZERO"interval standard. 2.Repairing and cost for wear and tear parts which are exchangeable. 3.Lower sensitive style of dust. 4.Do not need grind surface to install rail. 5.Both guide rail and slide board can move.