Invacare Pronto Sure Step M91 Electric Wheel Chair Scooter Surestep Wheelchair. The item "Invacare Pronto Sure Step M91 Electric Wheel Chair Scooter Surestep Wheelchair" is in sale since Thursday, October 22, 2020. This item is in the category "Health & Beauty\Medical & Mobility\Mobility/Walking Equipment\Wheelchairs". The seller is "blakes-mobility" and is located in West Chester, Ohio. This item can't be shipped, the buyer must pick up the item.