MJ urethane flat lap for pumice pre-polishing on glass. The extruded urethane carries fine fibres that generate friction against the glass surface, while its open pore structure holds the pumice in place — giving a fast, controllable rough polish right across the lap.

Supplied with a magnetic backing, so it mounts and swaps on a magnetic flat lap platen in seconds.

• Diameter: 24 inch
• Thickness: 15 mm
• Backing: magnetic
• Use with: pumice
• Fits: flat lap grinders

Part of the Flat Laps for Pumice range — see all six sizes, a comparison of felt vs MJ urethane, and how to get the best out of them.