Kondex Knife Head Segment for John Deere AH213012 Left, Coarse 864 SMA144155 38 Height 21 Cutoff Allowance 55mm 38 Height 21 listed below Specifications Brand Kondex Head Part # Flex Draper 491 231842 Head Part # Platform Header 491 220051 Head Part # Rigid Draper N A Use 491 813906 Section Part # 491 632621 ( H163131 ) Segment Type Head Segment Left Hand Serration Spec Coarse Tooth 7 per Inch Drive Type Double Drive Header Width 30 Foot Header Width 35 Foot Header Width 40 Foot Header Width 45 Foot Header Type Flex Draper Drive Type Single Drive Header Width 18 Foot Header Width 20 Foot Header Width 22 Foot Header Width 25 Foot Header Type Platform Header Sections per Segment 25 Sections