EGO POWER+ Select Cut 56-volt 21-in Cordless Self-propelled 7.5 Ah (Battery and Charger Included) in the Cordless Electric Push Lawn Mowers department at Lowes.com
20 Inches Four-stroke Gasoline Lawn Trimmer Self-propelled Hand Push Park Greening Mowing Weeding Lawn Mower Garden Equipment - AliExpress
22-Inch 163 cc 4-Cycle Gas Powered Self-Propelled Lawn Mower, Variable – SENIX Tools