Linear roller guide OSG-20/25/30/40 Linear rail 1.Roller linear guide OSG25/Linear rail 2.OSG-20/25/30/40 3."ZERO"interval standard 4.Higher speed,lower noise 5.Best price 1.Roller linear guide OSG25/Linear rail Manufacturing Process: Materials: Gcr15,SUS440C Lenth: Max length is 3000mm,as per demand Model Number: OSG-20/25/30/40 Place of Origin: Zhejiang China (Mainland) Brand Name: 2. Using feature: used in the defense, precision machinery, medical instruments,