Lawnmower blade compatible STIGA Models Collector 55 , Collector 55 S , Collector 55 S Combi , Combi 55 , Combi 55 S , Turbo 55 , Turbo 55 S , Turbo 55 4S Rental , Turbo 55 S 4-Speed , Turbo 55 S Combi , Turbo 55 S Roller , Turbo Pro 55 S Combi Features: Length (mm): 535 Centre hole (mm): 10.5 Outer hole (mm): 8 Centre-to-centre distance (mm): 55 Weight:649 g Order no.: 13270143 Reference no.: 181004144/0 , 81004144/0 , 1111-9091-01 , 1111-3038-01 STIGA SR m