Hole 9.5mm, 2 lower hole centres 17mm, lower hole to top hole centre 53mm ID 22.5mm internal tube size. To fix the old to the new there is a small hole on either side that can then be drilled and a bolt (not supplied) can be fixed with a nut.
This product would be ideal for homeowners who need to repair or replace the lower handle on their lawnmower.
