OTC 7011 10Pc Ball Hone Set Ball Hones can be used for refinishing and resizing boressuch as found in brake calipers, engine lifters, and u-joint yokes.Also useful for any bearing or bushing application. All hones are 180 grit Silicone Carbide for excellent cutting and finish. Set includes: 4673-1 - 29 mm Vacuum Switch and O2 Socket, 1/2" Drive. 4673-2 - 7/8" Vacuum Switch and O2 Socket (wide slot), 3/8" Drive. 4673-3 - 27 mm Thermal Sensor Switch, 1/2" Drive. 4673-4 - 7/8" Vacuum Switch and O2 Socket (narrow slot), 3/8" Drive. 4673-5 - 1-1/16" and; 1" Oil Pressure Sending Unit Socket, 3/8" Drive. 4673-6 - 7/8" O2 Sensor Socket, offset 1/2" Drive. 4673-7 - 7/8" O2 Sensor Socket (low profile), offset 3/8" Drive. 4437-8 - 1-1/16" and 1" Oil Pressure Socket (short access), 3/8" Drive - See more at: to lock the cam and crank sprockets together for removalSet includes: 4673-1 - 29 mm Vacuum Switch and O2 Socket, 1/2" Drive. 4673-2 - 7/8" Vacuum Switch and O2 Socket (wide slot), 3/8" Drive. 4673-3 - 27 mm Thermal Sensor Switch, 1/2" Drive. 4673-4 - 7/8" Vacuum Switch and O2 Socket (narrow slot), 3/8" Drive. 4673-5 - 1-1/16" and; 1" Oil Pressure Sending Unit Socket, 3/8" Drive. 4673-6 - 7/8" O2 Sensor Socket, offset 1/2" Drive. 4673-7 - 7/8" O2 Sensor Socket (low profile), offset 3/8" Drive. 4437-8 - 1-1/16" and 1" Oil Pressure Socket (short access), 3/8" Drive - See more at: includes: 4673-1 - 29 mm Vacuum Switch and O2 Socket, 1/2" Drive. 4673-2 - 7/8" Vacuum Switch and O2 Socket (wide slot), 3/8" Drive. 4673-3 - 27 mm Thermal Sensor Switch, 1/2" Drive. 4673-4 - 7/8" Vacuum Switch and O2 Socket (narrow slot), 3/8" Drive. 4673-5 - 1-1/16" and; 1" Oil Pressure Sending Unit Socket, 3/8" Drive. 4673-6 - 7/8" O2 Sensor Socket, offset 1/2" Drive. 4673-7 - 7/8" O2 Sensor Socket (low profile), offset 3/8" Drive. 4437-8 - 1-1/16" and 1" Oil Pressure Socket (short access), 3/8" Drive - See more at: