Draper 25mm 57mm cylinder hone draper 56247 the draper 25 57mm cylinder hone 220 grit stone set is for use on small bore cylinders ie motor cycles etc with capacities between 25 and 57mm 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 overall length 210mm supplied complete with 220 grit stone set which are also a