JB Weld Valve Grinder Grinding & Lapping Compound Paste 42g (1.5oz)

J-B Weld™ Valve Grinder is a water-based odorless and abrasive paste designed to aid in valve grinding and lapping operations on engines to remove burrs, surface defects, deposits and corrosion. 
The paste combines 4 grit sizes so that one application begins as a coarse 120 grit, then grinds down to 150, 180, and then a fine 200 grit for a fast and smooth finish.

• Water-based odourless abrasive paste.
• Grinding and lapping compound for valve faces and seats.
• Removes burrs, defects and corrosion.
• Auto-adjust grit: application starts as a coarse120 grit, then grinds down to 150, 180, and then a fine 220.