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. $22.99 each Pickup in Oshawa or Canada Wide shipping available Order online for pickup or shipping at thebicycleworx.square.site Call or Text 905-442-3064