Our gear-drive transmissions utilize high-performance gears, not chains, to reliably transmit power to the ground. Whether you’re talking about portable Earth Augers, space saving Front-tine Rototillers, deep-digging Rear-tine Rototillers, or our diminutive Mini Cultivator, they all feature rugged, quality-built gear-drive transmissions that help to make Earthquake Lawn & Garden products long-lasting.