This Lisle Brake Cylinder Hone - 10500 is a 2-Stone Hone, designed to fit cylinders ranging from 11/16" to 2 1/2" (17.4 - 63.5mm).

With its innovative design, this hone enables efficient polishing and honing using a single stone grit. The stones' square ends allow them to effectively hone all the way to the end of step-cut and blind-end cylinders. Each hone includes 240 grit stones, measuring 1-1/8" in length.