Ladder levelers Extends up to 10 inches for steps. Attaches to either side or on multiple ladders. Large heavy duty swivel shoe with spurs. With patented KeyLok Quick Connect system. Fits FE1700, FE3200 ( 16 feet -32 and 36 feet - 40 feet ), FE7600, FE4200HD, L-3022-PT, AE3200, AE2200, AE280 0, AE1200HD, AE1200, and L-2094. Includes 1 quick connect leveler and 1 set (2) quick connect base units.