SCAG SZL-42H-21FR 42" Liberty Z Zero-Turn Lawn Mower with Kawasaki® Engine 21HP - Because every home deserves stripes, the Liberty® Z is designed and manufactured to deliver a top-of-the-line experience at a homeowner price point. It is a professionally-constructed mower fit for your own lawn. The 42" hero cutter deck provides the top line power, precision and performance professionals and homeowners demand. The Liberty Z gives more people the chance to see why Scag® machines are simply the best.