9.5mm wide Heavy Biker Tungsten Necklace – 18”, 20”, 22", 24”, 26" & 30" 24” weight is about 270 grams Solid Tungsten Carbide, cobalt free. NEVER SCRATCH and Corrosion Resistance. The only way to scratch tungsten is with diamonds. Tungsten is the only rare and exotic metal that can be permanently polished. It is polished to a perfect mirror finish using diamonds coded polishing wheels and unlike other metals; it can retain the exact polish for life time. Hypoallergenic Mirror-Polish Finished / Secured Lobster Lock! Great for gift! USA buyers. We are located in Los Angeles , California and we ship FAST! We provide 30 days no-question ask return guarantee! Please select your correct size - 18”, 20”, 22" ,24”, 26" or 30" Buy with confidence, See our 100% fe.