• Kit allows you to mount 7/8 and 5/8 arbors on 5/8-11 spindles
• This reusable adapter kit contains everything you need to mount depressed center wheels and saucers with 7/8 Inch center holes on to portable right angle or vertical shaft grinders
• Adapter hubs are threaded for mounting on to standard 5/8 Inch-11 NCRH spindles
• Alternate number: 114

Norton® 07660789275 Depressed Center Adapter Kit, Size: 7/8 Inch Center Hole, Connection: 5/8-11 NC RH, For Type/Brand/Model: T27, T28 And T29 Series 6 - 9 Inch Depressed Center Wheels