90 Degree Red Angled Aluminum Tire Valve Stems fits most BMW Harley Davidson Honda Kawasaki Suzuki Yamaha Drop forged aluminum and made in Italy. Used by many MotoGP, BSB, Endurance and other top level motorcycle competitions. Makes access to tire valve stems much easier for pressure checks and/or fills. Not only they are much safer than the rubber valve stems, they are considerably lighter as well. Each valve weighs in at only 11grams (0.388 ounces)! 5 year limited warranty.