the construction of the bottom assembly 50 and hold down system the following description will therefore focus on those portions of the drum the bottom assembly 50 comprises a drum bottom heading 60 having a central hole 62 the hole 62 is preferably circular although it will be appreciated that other shapes may be suitable an annular disk 64 may be mounted onto bottom heading 60 to provide strength if desired as in the conventional structure an anchoring member 70 is mounted to the bottom heading 60 in cooperation with hole 62 such that an anchoring portion 76 of anchoring member 70 is disposed for anchoring a hold down system for a wire coil 30 as will be explained shortly referring additionally to fig4 6 anchoring member 70 is preferably constituted by a snap mounted plug having a body 71 of cross sectional shape generally complementary to that of hole 62 in the form shown plug body 71 is generally cylindrical with a diameter slightly smaller than that of hole 62 the plug 70 is further provided with a laterally projecting flange portion 72 and at least one laterally projecting preferably resilient member 74 at positions of the body axially spaced from flange portion 72 there being four such members disposed at equal circumferential intervals in the illustrative form plug 70 is preferably formed as a unitary plastic molding as of hdpe high density polyethylene polypropylene or any other suitable plastic and in such form can be manufactured.