BLADE 4 teeth compatible lawn mower robot: One XH, Runner X, Runner XK, Runner XKH, Runner XP, Yard WYP Outer diameter: 290 mm Centre hole diameter: 10,1 mm Side hole diameter: 8 x 4,5 mm Side hole spacing: 4 x 20, 4 x 21 mm CODE: 26-702 ORIGINAL CODE REFERENCE: 200_Z0530_0A, 200Z05300a, 25196 WIPER