1,Cold Drawn Guide Rail of T45/A(45*45*5mm),T50/A(50*50*5mm) 2,Factory passed ISO9001:200 3,SJEC,FUJI,IFE ... ,TOSHIBA supplier 1,Cold Drawn Guide Rail ProcessingISO7465:2007Typeb1h1k2pm1m2t1t2db2b3l1l2VBoltTolerance±0.50 ... ±0.20±0.15±0.50+0.06-0+0-0.06±0 ...