Feature: 1. High-quality materials: Made of aluminum alloy, stable at high speed. 2. The edges are polished smooth, with texture and light enough, stable for high speed routines. 3. Suitable for daily practice or competition. 4. It can not only exercise finger flexibility, but also exercise concentration ability. 5. It is a perfect holiday gift and birthday gift for family and friends! Specification: Our yo-yo are made of high-quality aluminum alloy with anodized surface treatment, which not only has wear-resistant and scratch-resistant performance, but also has a more delicate and beautiful appearance, which is both durable and beautiful. Features: High-quality materials: Made of aluminum alloy, stable at high speed. The edges are polished smooth, with texture and light enough, stable for high speed routines. Suitable for daily practice or competition. It can not only exercise finger flexibility, but also exercise concentration ability. It is a perfect holiday gift and birthday gift for family and friends! Specifications: Material: Aluminum alloy Color: Black/ Blue (optional) Size: 5.6 * 4.3 cm/2.2 * 1.7 in Gap: 4.45mm / 3mm Weight: 66g/2.3oz Package size: 10.5*6*5 cm/4.1*2.4*2 in Package weight: 92g/3.2oz Package list: 1* Yoyoball 5* Strings (random color) 1* Glove 1* Bearing 1* User manual Package List: 1* Yoyoball 5* Strings (random color) 1* Glove 1* Bearing 1* User manual