Charniol 20 Pcs Transformable Chain Robot Finger Spinner Robot Deformed Mechanical Spiral Twister Fingertip Spinners Spiral Twister Fingertip Decompression For Adults TeensFeatures: Abundant Package: You Will Get 20 Pieces Of Fingertip Spinners For Boys, Which Can Exercise Fine Motor Skills, Hand And Eye Coordination, Fast Reaction Ability And Logical Thinking Skills. They Are Good For Muscle Development And Positive Growth. Reliable And Sturdy: These Mechanical Cool Finger Spinners Are Made Of Quality Abs Plastic, Pressed At High Temperature, Fine Craftsmanship, Can Serve You For Quite A Long Time. Specifications: