• New and unused Shimano W-cut 47t 130bcd alloy chainring. 
• Gear-cut teeth, like all quality rings. Takagi made cranks and rings for Shimano - then were bought by Shimano.
• Use 3/32" or 1/8" chains.
• 88 grams/3.1oz. and 3.6mm thick.
• Made in Japan quality from the 1970's or 80's.
• BMX221.
• FREE shipping in the USA.