The silicone mold has a positioning hole. When you finished the pendant making, there would be a hanging hole which is convenient for wearing. Thanks to its smooth surface and non-stick characteristic, the mold is easy to demould. Additionally, the compact size make it easy to carry. Made of silicone, they are flexible. The set comes with 5pcs molds of different shapes. You can use these molds to make pendants, jewelries, keychains and more. Item Name: Pendant Mold Material: Silicone Features: Easy to Demold, Non-stick, Flexible Color: White Size Details: Water Drop Shape: 3cm/1.18" (Approx.) Round Shape: 3cm/1.18" (Approx.) Oval Shape: 3cm/1.18" (Approx.) Square Shape: 2.9cm x 2.9cm/1.14" x 1.14" (Approx.) Rectangular Shape: 3.3cm x 2.4cm/1.3" x 0.94" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x 1 Set of Pendant Molds(5Pcs/Set)