FRM ISIS DRIVE aluminium bottom bracket. Used but in perfect working order, has been used very little. 108mm long, for standard BSA threaded bottom bracket frames.
Includes 2 extra set of bearings (4 extra bearings) that I got when I bought the bottom bracket but never used it. This is the lightest ISIS DRIVE bottom bracket that you can get. 100% sure of that.
Verified weight: 145g.
Thanks for looking and happy trails!!