TaylorMade TLC Weight Cartridge For use in TaylorMade & Rossa moveable weight products. The TLC cartridge's three-piece construction incorporates titanium, stainless steel and tungsten. Its design was conceived to keep it firmly in place in the TLC port during the swing, yet easy to remove and reinstall. It is completely interchangeable for use in the r7 quad or r7quad TP driver. When developing the r7 quad's heavier TLC cartridges, TaylorMade's research and development department was challenged to find a way to secure them in the TLC port while also making them easy to remove. TaylorMade engineers solved the problem by devising a three-piece TLC Cartridge. The first piece is made of heavy tungsten in the shape of a truncated cone, with a hole bored through from top-to-bottom, which accommodates the second piece of the cartridge - a long, thin screw. The third part is a stainless steel retaining ring permanently attached to the rim of the cylinder, like a cap. The head of the s