... high chrome steel 2.LMF, LMK,LMF series 3. round, square, oval types 4.OEM service All kinds ... of flange linear bearings(square, round etc) Two types of Linear bearings: with flange and without flange.Series: LM ... etcThere are three types with flange:1. LMF: with round flange2.LMK: with square sharped flange3.LMT/LMH: with oval flange.Linear ... All kinds of flange linear bearings(square, round etc)