1.beam for mechanical auto locking 2.milling head feed stepless adjustable 3.super audio quenching treatment 4.high quality modelTX20ATX20BTX20CTX20DTX20ETX20Fbedway center distancemm60070080090010001200beam guide widthmm500500500600600720max.working lengthmm3000,4000,6000,8000,10000,12000,14000,16000,18000,20000max.working widthmm130016001600180018002000200022002000250020002500max. working ...