Lisle Brake Cylinder Hone 10500 — adjustable 11/16"–2½" fit, 240-grit square-ended stones

The Lisle 10500 is a two-stone brake cylinder hone designed to restore and finish brake cylinder bores ranging from 11/16" to 2½" (17.4–63.5 mm) with controlled pressure and square-ended stones for end-to-end contact.

Mechanics and DIYers use the Lisle 10500 Brake Cylinder Hone to remove glazing, restore cross-hatch patterns, and achieve a consistent finish inside wheel or master brake cylinders. Its dual abrasive stones and adjustable design let you abrade or lightly polish bores using a single grit, while the square-cut stone tips reach step-cut and blind-end cylinder areas that rounded stones can miss.

How does the Lisle 10500 adapt to different cylinder sizes?

The hone expands to fit a wide range of bore diameters so you can service many brake cylinder sizes with one tool. Simple adjustment allows the two stones to press outward evenly for uniform contact across the entire bore.

• Fits cylinders from 11/16" (17.4 mm) up to 2½" (63.5 mm)
• Two stones apply balanced pressure for consistent surface contact
• Quick to set up and fine-tune for various diameters

What finish do the stones produce and how long are they?

Lisle supplies 240-grit stones that provide a medium-finish appropriate for brake cylinders—removing glaze and restoring the necessary surface pattern without over-cutting. Each stone measures 1 1/8" in length, giving enough abrasive surface for sustained work in a single pass orientation.

• 240-grit abrasive for restoration and light polishing
• Stones are 1 1/8" long for reliable contact area
• Produces a consistent cross-hatch useful for sealing and fluid retention

Why are square-ended stones useful for brake cylinder work?

Square-cut stone ends are shaped to reach right up to the bore ends so you can hone step-cut profiles and blind-end cylinders without missing the corners. This geometry helps ensure uniform removal and avoids leaving unworked areas that can compromise seal fit or fluid behavior.

• Square ends contact step-cut cylinder faces and blind ends
• Helps achieve edge-to-edge smoothing and pattern restoration
• Reduces the need for additional hand-finishing at the cylinder ends

Who this tool is for: the Lisle 10500 is aimed at automotive technicians, brake rebuild shops, and hands-on vehicle owners who rebuild wheel or master cylinders. If you need a compact, adjustable hone that handles a broad size range, restores glazing, and reaches blind or step-cut cylinder ends, this tool is a practical choice. It’s not intended for heavy stock removal on severely scored bores—use it for resurfacing, finishing, and preparing bores for new seals and components.