This sprocket is machined from 7075-T6 aluminum and has a thickness of 8mm for more strength. The teeth are offset to provide better chain alignment and reduce wear. 

• Material: 7075-T6 aluminum
• Teeth: 25T (1/8")
• Bore: 23.8 mm (15/16")
• Thickness: 8mm
• Adapters: 19mm and 22mm included
• Weight: 2.36oz/67grams