troy-bilt walk-behind mowers 21" awd 3-n-1 self propelled mower • 159cc troy-bilt ohv engine • 3-n-1 tri-action cutting deck • ergonomic adjustable handle • dual lever 6-position height adjustment 21" fwd 3-n-1 self propelled mower • 159cc troy-bilt ohv engine • fwd variable speed transmission • electric push button start • 3-n-1 tri-action cutting deck • dual lever 6-position height adjustment 21" rwd 3-n-1 self propelled mower • 159cc troy-bilt ohv engine • rwd variable speed transmission • ergonomic adjustable handle • dual lever 6-position height adjustment 21" high wheeled fwd 3-n-1 self propelled mower • 159cc troy-bilt® ohv engine with autochoke • fwd variable speed transmission • dual lever 6-position height adjustment product may vary by store location and availability