MTD YARD MAN GUTBORD MOWER BLADE FOR MODELS 3210E , 3290E , BEM913-1 , BEM932 , BL1032 EP , EM31210 , EM3211 , JUNIOR31 , K3290E MODEL - TECHNICAL SPECIFICATIONS LENGTH 307 mm CENTRAL BORE 17 mm OUTER BORE - mm INDEX OF CENTRAL HOLES - mm CODE: 13271443 ORIGINAL CODE 742-00836 SR