u201d section providing slight clearance between form face back side and flange stiffening lip and between form top and bottom flanges connection of clip 26 to stake 16 is made by the clamping pressure of a mutually opposed pair of nut 18 nut bears against either a hairpin bar 20 or a kicker plate 22 either of these elements serve to spread nut clamping force to both stiffened edges of clip 26 at opening for stake and provide adequate friction at those edges to secure form 12 against in situ concrete fluid pressure et cetera hairpin bar 20 is of either 9 mm u215c u2033 or 12 mm u00bd u2033 square steel bar stock it may be cold bent and should be done so accurately about stake 16 diameter so that the use of a washer is not required at nut 18 the finish length is unimportant providing it spans the thickness of clip 26 the preferred length may be actually controlled by other embodiments of hairpin 20 not disclosed herein kicker plate 22 is a steel hinge of heavy stock having a notch in each leg for purposes of insertion over threaded stake 16 other embodiments of this device have been disclosed in fig4 of u s pat no 5 564 235 to the selfsame inventor of the present invention for this embodiment of kicker 22 the use of heavier hinge stock is structurally important due to the required amount of clamping force applied via nut 18.