Package Included: You will receive 51.4cm/20.2 inch long armatures, 16mm in diameter, 2pcs Y flexible connectors and 2pcs X chest connectors, ample quantities and nice combinations are great for your crafts DIY. Material: Made of good quality plastic, solid and durable, fine craftsmanship and exquisite details enough to last you a long time, joints worked perfect for your little items. Easy to Use: Perfect addition to body to allow them to have life-like movements; these joints will help you create moveable limbs on your creations, connect the limbs to move and stay in place. Wide Application: Used for plush, crochet amigurumi animals, memory bear, pet, such as teddy bear, so that the neck, arm and leg can rotate 360 degrees flexibly. Ideal Gifts: Great for your siblings, students, classmates, friend and other people, you can DIY the crafts with others; Special pliers are needed to lock the skeleton.