ITEM NO: JDBE0718 Suitable to use with standard 1/4" or any electric drill. Use appropriate fluid for cutting lubricant. Interchangeable honing Supplied complete with 4" (100mm) long 180 grit stones Capacity: 2" to 7" (51 - 177mm) in diameter Overall Length: 12" (300mm) Application: Automotive brake and clutch cylinders, engine cylinders of motorcycles, lawn mowers, outboard motors, hydraulic cylinders, machine and industrial engines and etc.