Genuine Cobra Part No: 2105200251A, 

For Cobra Lawn Mowers: M40B, M40C, M40SPB, M40SPC, M41C, M46C, M46SPB, M46SPC, M51SPB, M51SPC, M56SPB, MX514SPB, MX515SPBI, MX564SPB, RM40C, RM40SPB, RM40SPC, RM40SPCE, RM46C, RM46SPB, RM46SPC, RM46SPCE,

IMPORTANT NOTE: ON MANY OF THE ABOVE MODELS THERE ARE VARIANTS OF BLADE HOLDER THAT HAVE BEEN FITTED OVER TIME. TO MAKE SURE THIS IS RIGHT FOR YOU CHECK THE OUTER DIAMETER AND COMPARE BELOW. ALSO IF YOUR HOLDER IS NOT THE SAME SHAPE, THIS IS NOT THE ONE FOR YOU. 

1 x Brand New Genuine Steel Blade Holder Boss Hub, 

( This is the part the blade mounts onto ), 

OD = 70mm, 

FREE DELIVERY WITHIN THE UK !