The phrase "small skewer" refers to a stick or rod that is narrow and short. It is often used for holding small pieces of food together, such as meat or vegetables, when cooking or serving them. Full definition
These shrimp skewers make for a lovely weeknight supper served along a light salad, or can be served on smaller skewers (with just one shrimp and one slice of peach) as passed hors d'oeuvre for a dinner party. (abbeyskitchen.com)
Using small skewer, pierce holes all over top of warm cake. (epicurious.com)