The HCW-11 fits slotted bottom bracket adjusting cups common on older English bicycles and less expensive bicycles with raised 16mm wrench flats.
The opposite end has two prongs that are approximately 23mm x 5mm for cups with recessed slots.
. HCW-11 fits "slotted" bottom bracket adjusting cups and cups with raised 16mm wrench flats
. Common BB's on older English bicycles, and less expensive bicycles
. Opposite end has two ears that are 23mm wide and approximately 5mm wide
. Manufacturer's Part No: HCW-11