ITEM NAME:Car Engine Brake Cylinder Hone Flex Shaft Bore Honing Durable inches 3 Tool Z9V8 Feature: Main Drive Shaft Is Flexible Easy Use And Self Centering Adjustable Honing Pressure To Suit The Particular Application Suitable For Use With An Electric Or Air Drill Convenient storage Specifications: Dimension: 2 to 7 in. Diameter range (51 – 177 mm) Setting: 2 through 4 in. And 4 through 7 in. Stones: 3 – 220 Grit Length of Stone: 7.62cm (3 inches) Product set: 1*Auto repair tools.Adjustable Honing Pressure To Suit The Particular Application. Suitable For Use With An Electric Or Air Drill. Main Drive Shaft Is Flexible. 1 Auto repair tools. Product set.