Pair of right and left blades Kit of right and left blades for ride-on mower lawn mower compatible lawn mower 102 cm deck models: TC102 - TWINCUT 102 CASTELGARDEN ALPINA STIGA JOHN DEERE HONDA Length: 520 mm Center hole diameter: 18 mm Side hole diameter: 8.5 mm Lateral hole spacing: 65 mm Part Number: 17-520 + 17-521 Original code: 182004341/0 + 182004340/0