IVY Classic 42384 7-Inch Turbo Backing Pad with 5/8-Inch - 11 Thread Locking Nut， 1/Card<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For using 7-inch resin fiber discs on 7-inch angle grinders with 5/8-inch - 11 spindles， Flex-Abrasive (Registered Trademark)</li><li>Raised spiral ribs and vents form air-flow channels which cool the discs and extend operating life</li><li>Metal reinforcing ring is connected to backing pad with three pins to strengthen construction</li><li>Includes 5/8-inch - 11 Locking Nut</li><li>Pad Diameter: 7-inch， Locking Nut Arbor: 5/8-inch - 11， Max RPM: 8500</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41i%2BEZ5ANlL.jpg" noproxy>