will be appreciated that the 34 push 34 mode would be the extreme opposite position of pressure element 54 and the neutral model will be in between these two extreme positions clutch 18 further includes a bracket 68 of substantial 34 u 34 configuration and provided with a cantilever bracket 68 is affixed on the other of the ends of the longitudinal element 48 and pressure element 54 is retained in bracket 68 by cantilever 70 with cantilever 70 forming a fulcrum for a rocking movement of pressure element 54 relative to shaft 16 in other words the coaction of pressure element 54 with shaft 16 and cantilever 70 will limit movement of pressure element 54 relative to longitudinal element 48 an extension 72 is provided on pressure element 54 for forming a footstep facilitating positioning of pressure element 54 during the neutral and push modes of clutch 18 as will be appreciated only a slight foot pressure need be exerted on the extension 72 in order to hold pressure element 54 in the neutral position against the bias of a for example compression spring 74 disposed between longitudinal element 48 and pressure element 54 for biasing pressure element 54 toward the pull mode preferably bushings 76 and 78 are fitted within socket 52 for guidingly receiving shaft 16 and the one end of spring 74 is disposed abutting the lower bushing 78 in order to exert the desired bias against pressure element 54 the operation of tool 10 will now be discussed in conjunction with fig4 through 9 of the drawings tool 10 is first steadied in a nearly vertical position by grasping crossbar 50 with both.