Specification:Bearing Type: Concave bearing for unrepsonsive /Thin bearing for responsiveDiameter: 55.5mm\2.18 inchesResponse: 19mm\0.75 inchesSkill Level: Beginner, Intermediate, ProWeight: 65.5gWidth: 43.0mm\1.69 inchesYoYo Material: Polycarbonate Plastic Features:RESPONSIVE YOYO FOR BEGINNERS - MAGICYOYO K2 PLUS is one of the MAGICYOYO top recommended 2 functional entry-level yo-yos. It is an excellent kids yoyo, good for beginner to practise basic string tricks 1A 3A 5A, just a gentle tug on the string, it will return your hand easily.DUAL PURPOSE YOYO - ALSO PRO UNRESPONSIVE YOYO - Yo-yo K2 is responsive yoyo (slim bearing), package attached unresponsive KK bearing. When you move to next level, just to change the bearing with KK bearing (attached), you will get a new Unresponsive Yoyo, no need to buy another yoyo, a good value for you.HIGH QUALITY - Made of high quality PC, beautiful color, pollution-free, safe for kids to use. Durable and sturdy. Ideal gift for kids, friends, beginners, family, as Christmas Birthday gift.Package Includes:1 x YoYo Ball(string random color)1 x Glove1 x InstructionsNotes:1. Due to various factors such as monitor brightness and light brightness, the actual color of the product may be slightly different from the picture displayed on the website.2. Please allow for slight manual measurement bias in the data.