Therefore the BB shells as well as the eccentric BBs themselves are included. The shells are steel, I have no idea what grade though.
Alloy Eccentric Bottom Bracket insert Shell 54 X 68mm BSA English Thread Panther
Alloy Eccentric Bottom Bracket insert Shell 51 X 68mm BSA English Thread Panther
Eccentric Bottom Bracket Conversion Kit for Bikes Adjustable 68 and 73mm Frames
Eccentric Bottom Bracket Conversion Kit for 68mm 73mm Frames, Aluminum Alloy for Bike BB Adaptor with for CNC for, Lightweight for Frame Adapter, Black
Hosrivae Aluminum Alloy 2mm Chainring Washer Spacer SX NX for MTB, Eccentric Effect Enhancer Shifting Efficiency, Lightweight Bike Bottom Bracket Spacer Adjustment, Black
Aluminum Alloy Chainring Spacer 2mm for GX SX NX Drivetrain, Eccentric Washer for Crankset Chainline Correction, Lightweight Bottom Bracket Shim Adjustment
