There are two types of these but only one part number. The one listed here goes with the 22mm nut and is the short eversion at 17mm long. For the long version remove the 'A' at the end of the part number. 3 required.
There are two types of these but only one part number. The one listed here goes with the 14mm and 17mm nut and is the long eversion at 20mm long. For the short version add an 'A' to the end of the part number. 3 required.