2 Piece Curve Template Makes smooth curves for pockets, bags & more! Pocket Curve Template with 4 different shaped corners. Clover® pocket curve template set is a a two-part lightweight metal tool set used for making identical patch pocket curves. The template has four curves 1 cm, 1.5 cm, 2 cm and 3 cm (3/8,5/8,7/8,1 1/4″). The shaping support has two clips to hold the fabric securely while pressing. This is a tool you will reach for again and again.