of the central axis of the vice 54 extends through the center of the abutment 20 in use of the tool the jaws of the clamp will be open the hose will be placed between the clamp jaws 26 and 34 and the clamp jaws will then be closed to fixedly secure the hose 16 in position with the open end 14 extending beyond the jaw extensions 58 and 60 as shown in fig2 at this time the arm 18 is retracted farther clockwise than the position shown in broken lines in fig2 the arm 18 is swung counterclockwise to an advanced position shown in fig7 and in broken lines in fig2 in which the arm extends across the open end of the gripped hose and in which a fitting 22 placed against the open end 14 of the hose will be engaged by the abutment 20 to initiate entry of the fitting into the open end the convex arcuate or hemispherical shape of the abutment 20 will have a self centering sliding action on the fitting 22 causing it to more easily enter the hose further movement of the arm beyond the fig7 position to the position shown in solid lines in fig2 will cause the fitting to be forcibly driven into the hose by the abutment the abutment 20 is close to the pivot axis 62 at the upper end of the arm 18 much closer than to the lower end of the arm so that a considerable leverage can be applied to the fitting because the force applied to arm 18 is counteracted by the force applied to handle 28 an.