IRD Italian-threaded bottom bracket cups
Retrofit your English-threaded bottom bracket to work on frames with Italian threading.
Compatible with IRD, Tange-Seiki and many other cartridge bottom brackets using two individual cups.
• made in Japan
• high-quality alloy cups
• 36mm x 24 tpi
• requires Park Tool BBT-22 for installation & removal
These will not work on Shimano cartridge bottom brackets!