isolating the subs from each other fig3 is similar to fig2 with the tool 200 being urged upwards in the string 110 as shown by arrow 301 and the upper and lower body portions 205 210 of the tool separated in order to align the equalization path 280 and ports 285 in fig3 the tool 200 has been moved upwards in the string 110 to a location adjacent sub 125 and the fingers 265 have partially entered a finger recess 315 formed in the inner diameter of the sub 125 the finger recess 315 is designed to facilitate the shifting of sleeves 135 at each sub 125 130 fig1 in order to expose one or more ports 145 leading from the wellbore to an adjacent zone in this case lower zone a in fig3 the fingers 265 have also contacted a lower edge 134 of the sleeve 135 and are poised to move the sleeve upwards to a position wherein window 140 formed in the sleeve and port 145 in the body of the sub are aligned because the tool 200 is still being moved upwards the equalization path remains open between upper 305 and lower 310 annular areas fig4 illustrates a position wherein the tool 200 has moved upwards to.