Fitted with Stones.Knurled Nut Controls Tension.Flexible Shaft for ease of use and self centering.Flexible shaft, controlled spring action and spread control limiter are features which contribute to faster changing from one cylinder to another with fastest cutting action.Engine Cylinder Hone Extremely versatile hone for 51mm to 177mm diameter cylinders found on , trucks, buses, tractors, industrial engines and small -cooled engines.Car Engine Cylinder Brake Hone Honing 51mm to 177mm Cylinder Flexible ShaftMaterial: metalColor: Silvery + BlackGrinding stone Size: 100*11mmPackage included: 1* Car Engine Cylinder Brake HoneOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.