Lisle (371) 10000 3-Stone Hone Fits Cylinders 27/32" to 2" (21.4-50.8mm).

3-Stone Hone Fits Cylinders 27/32" to 2" (21.4-50.8mm). Controlled pressure makes it possible to polish or hone with just one stone grit. Square ends of stones hone to the end in step-cut and blind-end cylinders. 240 grit stones are 1 1/8" long. Flexible