blades for cutterbar mowers MTD YARD MAN GUTBORD FOR MOWER MODELS 26 NOVOTRAC 10SL , NOVOTRAC 11 , RD10/660 SL , RD 1160 , 8/66 MODEL - TECHNICAL SPECIFICATIONS LENGTH 660 mm CENTRAL BORE 10 mm OUTSIDE BORE 7. 9 mm CENTRAL HOLE INTERAXIS 63.5 mm CODE: 13270329 ORIGINAL CODE 742-0255A , 742-0255 , 742-0194 , 942-0255A , 942-0255 , 090.90.728 SR