Syntec 7″ Jumbo Spiral Cup Wheels have double the segment height of traditional Spiral Cup Wheels for double the life! A great value that works wonders for applications that involve general concrete prep, as well as high spot and light coating removal. The Jumbo Spiral Cup Wheel is a top seller that has a slightly longer lifespan of diamonds than the normal Spiral Cup Wheels. Syntec is a manufacturer that has been creating diamond tools that outlast and out perform the competition for decades. Try the Syntec difference today!