Features and Benefits:Six different profiles – sand almost any shape Soft, rounded edges – virtually eliminate gouging; glide over varying surface levels Three different densities – soft and pliable to compress into hard-to-sand areas Super lightweight – comfortable no matter how you hold them Extremely durable – can use adhesive or non-adhesive wet or dry sandpaper and resists most solvents Soft-Sanders have been designed to sand almost any shape encountered in automotive, home improvement, marine and woodworking applications. Designed to use adhesive-backed sandpaper, they work great with non-adhesive wet or dry sandpaper. The blocks virtually eliminate gouging; are super lightweight, offering zero fatigue; glide over varying surface levels; and are resistant to most solvents. Tapered edges of blocks allow you to sand up to and underneath those hard-to-reach areas.