The B.L. is Ben Lewis new sprocket from Alive Industry in Japan. It’s an orthodox 4-spoke sprocket with a unique design.

• The body is 8mm thick and made by A7075-T6 aluminum resulting in a sturdy and rugged sprocket.
• Made in Japan
• Colors: Black
• Material: A7075-T6 aluminum full CNC machined
• Compatible spindles: 19mm 22mm 24mm
• *19mm and 22mm are compatible with the included spacer
• Thickness: 8mm
• Size : 25T 26T 27T 28T 30T
• Weight : 122g (25T)