The Silver-Line SL-8 is the leader in rental sanders for one reason...it works! The SL-8 is the only machine on the market that will enable the DIYer to achieve the professional results the first time they sand a floor. The SL-8 features a 1HP constant speed motor, soft rubber drum and our unique cam locking system. When combined they work like a professional sander. The sand paper is held between 2 springloaded cams while the slow 1800 RPM constant speed of the drum will not gouge floors. The tilt action of the SL-8 also allows for a more controlled and even sanding. The weight of the machine is specially designed and evenly distributed for best results. As with all Silver-Line equipment and parts, the SL-8 is hand built, tested and manufactured in the USA to assure quality and dependability and low maintenance.