s shaped development illustrated in fig1 fig1 shows the inside surface of ribbon 216 ribbon 216 has a relatively wide outer section 216b for example 3 4 inch wide a similarly wide inner section 216c has coincident apertures for receiving previously mentioned spindle 14 ribbon 216 is so arranged to apply a clockwise torque on spindle 14 when spindle 14 is viewed from behind the width and length of the various sections of ribbon 216 can be varied depending upon the desired drag and torque also the orientation of the stepped edges can be reversed to provide a torque in the opposite direction if required to facilitate an understanding of the principles associated with the foregoing apparatus the operation of the embodiment fig1 6 will be described although the operation of the other embodiments is similar ribbon 16 is initially prepared by stretching it laterally so it is flat next the ribbon is rolled from the two outstretched midpoints to form the side by side rolls illustrated in fig1 once ribbon 16 is so rolled cap 30 can be placed over the ribbon to keep it rolled or furled the grenade bodies 10 can then be loaded into an artillery shell missile head or other vehicle by stacking the grenades end to end in a number of columns the forward end of body 10 has a conical concavity providing space for the capped ribbon the number of columns of grenades and the number of grenades per column can be varied depending upon the particular weapons.