*Range：1 -1/4”~3 -1/2”(32~89mm). *Stone Size：50x 8x 5 (3pcs). *Collar prevents stone breakage. *Sleeve makes insertion in cylinder easy and protects stones when not in use.

Engine cylinder hone for deglazing engine cylinders 1-1/4" to 3-1/2" in diameter Flexible shaft for easy use and self centering Knurled wheel adjusts spring pressure of stones against cylinder bore Cylinder Hone features 3 replaceable 2-Inch long 220 grit stones WARRANTY&SUPPORT: One year warranty. Any problem, please feel free to contact us.