2 pump pistons (50% Faster to Load); Fully sealed hydraulic unit (significantly reduces “air bound” conditions); No Breather to Install; Fabricated steel lift arm; Safety bypass valve prevents overloading; Handle pad and lift saddle pad included; Removable saddle for use with transmission adapter NLE 791-7130; 3 1/2 Ton Professional Service Jack, No breather to install, Fabricated steel lift arm, Safety bypass valve saddle included, Removable saddle for use with Transmission Adapter NLE791-7130