Cylinder Hone, Manufacturer suggested retail price. $28.95 Features and Benefits: Controlled pressure assures positive, adjustable contact through full range Operates with any electric drill Furnished with 3" long 220 grit stones Adjustable stop collar permits quick selection of two range settings, from 2" to 4" and from 4" to 7" Stone arms are easily compressed to eliminate cylinder scratches Skin-packed. Manufacturer: Lisle Lifetime warranty does not cover abuse