The handle can be adjusted , making the operating of this machine easy and comfortable. The lever is within easy reach to adjust height throughout the task without having to bend. Reduces noise, increases stability and is extremely durable. This polyethylene base has a pebbled surface, impervious to chemicals. Designed to offer the maximum comfort throughout the operation. The simple two-finger operation reduces operator fatigue. This two piece retro-fit assembly is easy to replace. Very easy to use and quick to learn. A new operator of the machine can become proficient within minutes! Designed for optimum performance and increased productivity, while driving down the cost to clean. At high speed, it allows polishing of floors through spray buff. At low speed, one uses it to strip, scrub, clean carpets or clean ceramic with a brush.