you must be superman as i couldn't get the spanner on at first-tried 22mm, 23mm and a spanner manufactured by "KING DICK" (i kid you not) here in Britain (where else could they be made?) size 5/8,11/16 end. I could not get the 22 or 23mm around the bottom of the sensor and the KD got around it but there was no room to move at all. Did you use a special tool or something???(the other end of the spanner was in the brake lines) . stuck again...