securing wedge 25 fig1 is a top plan view of the support post 35 with the screw 36 inserted therein fig1 is a side view of the support post 35 showing the support post top surface 353 which is the surface that the underside 211 of the bottom 21 of the detachable insert 20 rests and the support post side 352 which is the surface which would abut firmly and securely against the inner surface 251 of the securing wedge 25 not shown in this fig1 fig2 is a bottom plan view of the support post 35 showing the support post hole 351 fig2 is cross sectional view k k please refer to fig1 through the support post 35 showing how a screw 36 not shown in this fig2 would be positioned in the support post hole 351 which is countersunk through the center of the support post 35 to operate the preferred embodiment of the drain 10 the user simply places the detachable insert 20 into the base 30 by aligning the securing wedges 25 on the underside 211 of the detachable insert 20 over the support posts 35 which have been secured to the support post footings 34 and thereby the base 30 by screws 36 the user then positions the inner surfaces 251 of the securing wedges 25 directly against the sides 351 of the support posts 35 and presses the detachable insert 20 downward into the base 30 since the diameter of the inner surface 251 of the securing wedges 25 is the same as the diameter of the support post the inner surface 251 will be in direct.