An extremely fast and easy method of joining fence or railing vertical pickets to the horizontal rails. Fits thin wall profile using 3/4" wide pickets. No glue or tools are required. Just route or drill a 3/4" hole in the pickets and a 1" hole in the rails. The fence or railing section can be racked in the field. Adjustable spring tabs accommodates a wide range of profile wall thickness. US Patent #6,971,831-B2.