This pic shows how the straps can be used on A-styles with no Florentine Curl and no button at the heel of the neck.You can SECURE the strap by running the closed loop under the strings just above the nut (closed end towards you) and then by grabbing the tail of the strap and pulling it back thru the exposed end of the closed loop to tighten. The leather button can then be slid down to secure the neck.