Superior Steel SS478 EZ Install 22 Tooth 4 Inch Fine Cut Angle Grinder Disc and Chain - 7/8 Inch Arbor Fits most of the 4-1/2 Inch angle grinders Great for curved work, sculpting, gauging and channeling Provides a smooth finished surface Warning: It is not advised to use the switch lock feature on any grinder. Doing so may result in serious injury or even death.