FLAWLESS LOOK GOOD. FEEL GOOD. BOWL GOOD. Flawless from core to cover, this baby shines bright like a diamond. Hammer's newest release will be sure to turn heads! Updated with Hammer's patent pending carbon fiber outer core, Flawless carries Hammer's industry leading three year warranty. JUICED PEARL COVERSTOCK Flawless. Juiced Pearl is an extremely responsive coverstock first used on the Rebel Yell. Combined with a 500/1000 polished finish, you can expect good length with a strong backend motion from the 40 WATT CORE The 40 Watt core was named after its light bulb shape and differential in the forties. You can expect medium flare potential from this core.