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