• NEW Shimano XTR MTB BB-UN91 70x113MM Italian-Thread Cartridge Sealed Bearing Bottom Bracket, out of box. 
• Square taper axle.
• Italian threads, fits 70mm bb shells, triple MTB cranks and has a 113mm axle.
• Complete and ready to use.
• Made in Japan quality from 1993.
• 9.7oz./276 grams.
• BB784.
• FREE shipping in the USA.