Draper 51mm 177mm cylinder hone draper 56246 for use on cylinders with capacities between 51 and 177mm ie cars vans trucks marine and industrial applications the flexible drive shaft allows easy alignment whilst working with the honing pressure adjustable to suit the particular application suitable for use with an electric or air drill the maximum working speed is 2400rmin supplied complete with 180 grit stone set which is also available separately as are other grades overall le