Powerbuilt 648439 Adjustable Cylinder Hone Deglazer Made to be the most reliable tools in the market today Tool solutions for most all situations Built to exceed tool standards For deglazing engine cylinders 2-Inch to 7-Inch in diameter Durable flex shaft Knurled wheel adjusts spring pressure of stones against cylinder bore Set screw and adjustable collar allow setting hone to 2 different maximum diameters for easier handling Hone features 3 replaceable 4-Inch long 220 grit stones