CTA Tools 2320   Coarse Grit Engine Cylinder Replacement Hone Stones For Model 2310 And 2325, 3-Inch Includes 3 Individual Hone Stones Cotter Pins Included Compatible with CTA Tools #2310 Engine Cylinder Hone and CTA Tools #2325 Engine Cylinder Hone Each Stone Measures 3-Inches (76-Millimeters) Featuring a Durable Coarse Grit of 100