8" - (Stencil measures 8" x 8", actual image measures 6.75" x 6.75" - with a 2" circle space in the middle) 10" - (Stencil measures 10" x 10", actual image measures 8.75" x 8.75" - with a 2.5" circle space in the middle) 11.25" - (Stencil measures 11.25" x 11.25", actual image measures 10.25" x 10.25" - with a 3" circle space in the middle) (To fit a 1x12 (11.25") board) 12" - (Stencil measures 12" x 12", actual image measures 10.5" x 10.5" - with a 3.1" circle space in the middle) (To fit a true 12" board or area) 14" - (Stencil measures 14" x 14", actual image measures 12.5" x 12.5" - with a 3.7" circle space in the middle) 16" - (Stencil measures 16" x 16", actual image measures 14.25" x 14.25" - with a 4.2" circle space in the middle) 18" - (Stencil measures 18" x 18", actual image measures 16" x 16" - with a 4.7" circle space in the middle)