arrows 68 69 so that expansion rollers 66 engage the wellbore casing to bend or force u201c open u201d the wellbore casing as discussed in greater detail below ball seat 70 is disposed within wedge upper bore portion 52 ball seat 70 includes ball 72 that initially blocks the downward flow of fluid through piston bore 44 as discussed in greater detail below after piston 40 has been forced downward arrow 51 to radially expand expansion rollers 66 ball release 74 having stem 75 and head 76 engages ball 72 and forces ball 72 off of ball seat 70 so that fluid is permitted to flow downward through piston bore 44 and into expansion assembly housing chamber 64 as a result drive wedge 50 can be forced upward in the direction of arrow 47 so that each expansion rollers 66 can be retracted into housing 16 of tool 10 discussed in greater detail below in a preferred embodiment head 76 is disposed within chamber 78 of housing 16 such that head 76 can move slightly within chamber 78 disposed below expansion assembly 60 is recovery assembly 80 recovery assembly 80 includes housing 82 that is operatively associated with a source of movement i e an actuating member of device such as a motor or a solenoid 85 fig8 10 the outer surface of housing 82 includes magnet 84 in this specific embodiment outer surface of housing 82 also includes a second cutting assembly made up of upper horizontal linear charge 86 and lower horizontal linear charge 88 housing 82 is radially moveable relative to housing 16 by solenoid 85 although housing 82 is shown as being flush with outer wall surface 22 of housing 16 it is.