TORO GROUNDMASTER 200 , GROUNDMASTER3280 D , GROUNDMASTER 3320 , GROUNDMASTER 4000D , GROUNDMASTER7200 , GROUNDMASTER7210 MODEL - TECHNICAL SPECIFICATIONS LENGTH 554 mm CENTRAL BORE 13 mm OUTER BORE - mm CENTRAL BORE INDEX - mm CODE: 13271109 ORIGINAL CODE 92-5608-03 , 92-5608 SR