JellyBeadZ Brand 18 Mini ABC Block Parrot and Small Animal Chew Toys-5/8 Inch Squares 18 blocks per package..Each MINI block approximately 5/8" (15-20 mm) Colorful wooden blocks satisfy your small animal's natural urge to chew Each block features pet-safe painted decorations, numbers or letters Center hole for skewering on a treat holder Inexpensive replacement parts for toys