AB Tools Eezi-Lap Oscillating Valve Grinding/Lapper by GUNSON LSR6

Professional tool for commercial or occasional use. Unique patented mechanism converts rotary drill action to oscillating grinding motion. Laps valves in double quick time. Gas tight seals in seconds. Suitable for all power drills with 5/16" (8mm) or larger chuck. Essential tool for use on multi valve engines. 22mm and 28mm sucker heads included to fit most valve sizes. Good engine performance depends on properly seated and sealed valves. Badly seated or burnt valves and worn guides and stems result in hot gases escaping under compression reducing performance and increasing engine damage. The best symptoms for this are poor starting and loss of power.