108 does not result in losing the engagement of metallic ball 145 with the hole 146 as an example to ensure that driving of screw 144 into hole 146 does not result in losing the engagement of metallic ball 145 with the hole 146 the hole may be constructed in a manner such that driving the screw 144 into the hole 146 is restricted beyond a threshold fig7 shows the assembly of coil tubing 702 reeled from a drum 704 by a drive motor 710 and an injector 712 in an oil well bore casing 706 the coil tubing 702 is connected with a drilling jar 708 and with a rotating tool 100 which drives an overshot 700 having jaws 716 to retrieve a target equipment 714 from a well bore the coil tubing 702 is reeled down from the drum by a drum 704 by a drive motor 710 and an injector 712 to avoid dislodging the equipment 714 and having it fall down the well bore lowering of coil tubing 702 slows as it nears the equipment 714 at the time of contact between the distal end of the overshot 700 and the equipment 714 lowering is immediately stopped the adjustable screws 144 in the rotating tool 100 have been set so that there is little friction between them and the helical grooves 153 of shaft 108 and rotation of the lower sub 114 or the housing assembly and the overshot 700 is induced by relatively modest downward acceleration of the assembly of coiled tubing 702 by the motor 710 the rotation closes the jaws 716 of the overshot on the equipment 714 so that the equipment 714 is grasped by jaws 716 finally the assembly of coiled tubing 702 is reeled up carrying up the.