Arnold Mulching Blade Set for Honda Engines, 21-In.

honda 21″ set of mulching blades. fits walk-behind models : hrb215, hrb216, hrb217, hrm215, hrr216, hrt216, and hrz216. replaces o.e. blade set 08720-ve2-001. blade dimensions : .804″ ( lower blade ) and 17/16″ ( upper blade ) with a round center hole.