HOUND RING MacMahone HOUND ring has a narrow/wide tooth configuration designed for 1 x11 set-ups without a chain guide. Stiff 4 mm plate thickness and aerospace grade which making HOUND ring out-standing without any compromise. -To Retain The Chain Without The Need Of A Chain Device -Quieter Drivetrain And Less Drag CNC Machined 7075-T6 Aluminium Provides The Perfect Blend Of Lightweight And Strength -Hard Anodized Finish Makes Them Ultra Durable And Increases Longevity