SPEED FEED TRIMMER HEAD 450Spool holds 20' of .095" lineUses .080" .095" or .105" lineFits models 22T,TR195'S, LT18, T18LT20, C20, T20, C230, M230, M231T230, T231, T232, C25, C2510M2500, M2510, T25, T250, T2500T2510, T2510X, C260, T260, T261C27, C270, T27, T270, T272X, T3410XBP35, C35, C350, T350, B45B450, RC45.Recommended for straight shaft trimmers. Arbor sizes included:10mmx1.25 lhf10mmx1 lhf8mmx1.25 lhf7mmx1 lhm8mmx1.25 lhm