This is Profile's Euro external bottom bracket, the outboard style where the bearings sit outside the shell in threaded cups. It covers Euro threaded shells in 68mm, 73mm, 83mm and 100mm widths, and comes in a 19mm or 22mm axle size so you can match it to your cranks.
Everything needed to fit it is in the box: left and right hand threaded cups, two bearings, a tube spacer, a cone spacer and aluminium and steel spacers. It installs with a Park BBT-9 tool and weighs 148g.
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