Cosmos Cutter Set. This set includes 3 different sized Cosmos petal cutters and one Calyx cutter. The Calyx cutter measures 1" x 1". The largest Cosmos Petal measures 1" x 1 1/2", the medium Cosmos petal measures 7/8" x 1 1/2", and the smallest Cosmos petal measures 1/2" x 1 1/8".