line c c of fig3 a fig3 d is a view of wrench set 10 along line e e of fig3 a and fig3 e is a view of wrench set 10 along line d d of fig3 a fig4 a is a view illustrating the position of pins 44 when a selected wrench 16 u00bd inch socket is in the extended and locked position as pins 44 fall into cross slots 48 and 49 as a user forces thumb portion 30 in the forward towards the right side of the sheet direction fig4 b illustrates the position of pins 44 when wrench 16 is in the retracted locked position pins 44 falling into the slots 49 and 50 as a user continues to force thumb portion 50 in the forward direction fig4 c illustrates pins 44 when wrench 16 is in the slideable or transition position pins 44 riding on the surface 43 of horizontal slot 42 until either the retracted or extended and locked positions are selected as described with reference to fig4 a and 4 b a user of wrench set 10 selects the desired socket size and then places his her thumb on the knurled thumb portion 30 associated with the individual wrench having the selected socket size on one of its ends the user then pushes the selected thumb portion in either the forward or reverse direction in order to have the.