This lock ring weighs only 4.5 grams! Replace your existing cassette lock ring to easily add some Chris King quality to your bike. Many standard cassettes come with heavy steel lock rings, and while they certainly work well, they're very heavy compared to this lock ring. This lock ring has a anodized pewter finish. This particular lock ring is sized for use when your cassette's smallest cog is 11 tooth. It's slightly smaller than the 12 tooth version.