The HUMMEL® made by Lagler Gmbh in Germany is the first ever and best-known belt floor sanding machine in the world. Mature, long-life technology for perfect sanding quality and enormous machine power have made it the undisputed number one system for wood floor sanding for decades. The combination of an aggressive sanding drum, three-stage drum pressure regulation and a belt tensioning device with integrated automatically regulated belt guidance guarantees quick work and optimum sanding quality.