The 3M™ Regalite™ Floor Surfacing Hookit™ discs are highly productive and cost-effective. They provide faster cutting, longer-lasting performance, and an easier disc replacement process compared to traditional discs. This edger disc has a durable purple Regalite™ color and sturdy paper backing. Floor Pads Application: Floor Surfacing; Diameter: 8"; Grit Size: 80; Color(s): Purple.