• Rare Shimano 105 SC RD-1056-GS 6/7/8-Speed Rear Road Derailleur. Use with double or triple crank.
• Will take a 30T/32T cog, with medium cage.
• Ready for index or friction shifting.
• Only 250 grams/8.8oz.
• Made in Japan quality from 1997.
• RD595.
• FREE shipping in the USA.