Abstract: A cleat device (20) is taught for forming concrete curbing that jointly retains a back board form (22) and a front board form (24) with a spreader (25) spaced apart between the forms. The cleat device consists of three basic elements first a right angle shaped cleat back (26) having a top (28) and leg (30) configured to intimately engage and retain the back board form. Second a cleat arm (44) that includes a top arm (46) and an acute angled downwardly depending member (48) attached to the cleat back top forming an inverted channel. The third element is a cleat leg (58) that is attached to the downwardly depending member allowing the cleat leg to be adjusted vertical or at an acute angle. Adjustment means provide a cleat device capable of supporting the back board and front board form with a spreader in-between while constructing a L-curb and gutter, a A-22 curb or a A-90 curb configuration.