Lawn mower blade compatible VIKING Models MB 555 , MB 555 BS , MB 555 E , MB 555 M Features: Length (mm): 520 Centre hole (mm): 10.3 Outer hole (mm): 8.3 Centre-to-centre distance (mm): 65 Weight: 1.16 kg Code: 13270160 Reference code: 6107 702 0130 VIKING SR m