Feature:1. Made of premium aluminum alloy material,anti-deformation,anti-collision and durable to use.2. Designed to train fine motor skills and eye-hand coordination. It also can cultivate the imagination,creativity and rapid reactionability.3. Dual functions for professionals,beginners and 8 years+ kids.4. Gold 10-ball bearing provides 4.4mm middle width,fits for unresponsive use.Suitable for professionals and advanced players playing tricks.5. Silver 8-ball bearing provides 3mm middle width,fits for responsive use.Suitable for beginners and 8 years+ kids.6. 3-finger glove helps to get minimal friction for high speed string tricks.One size fits most hand size.7. Come with 5pcs strings,easy to replace and use.Specification:Perfect choice for professionals,advanced players,beginners,kids,etc.Features:Made of premium aluminum alloy material,anti-deformation,anti-collision and durable to use.Designed to train fine motor skills and eye-hand coordination,It also can cultivate the imagination,creativity and rapid reactionabilityDual functions for professionals,beginners and 8 years+ kids.Gold 10-ball bearing provides 4.4mm gap width,fits for unresponsive use.Suitable for professionals and advanced players playing tricks.Silver 8-ball bearing provides 3mm gap width,fits for responsive use.Suitable for beginners and 8 years+ kids.3-finger glove help to get minimal friction for high speed string tricks.One size fits most hand size.Come with 5pcs strings,easy to replace and use.Specification:Color: Brown / Black / Red/ Black and Blue/ Black and Pink (optional)Material: Aluminum alloy For age: 8 years upDiameter: 55 mm / 2.2 inWidth: 41 mm / 1.6 inGap width: 4.4mm / 3mmBall weight: approx. 66.7 g / 2.4 oz (not includes strings and other accessories)String length: approx. 1050 mm / 41.3 in (for each)Package size: 103 * 60 * 47 mm / 4.1 * 2.4 * 1.9 inPackage weight: approx. 97.6 g / 3.4 ozPackage List:1* Yo Yo Ball1* 8-ball Bearing1* Screw (for silver 8-ball bearing)5* Strings(color by random)1* Instruction1* 3-finger GlovePackage List:1* Yo Yo Ball1* 8-ball Bearing1* Screw (for silver 8-ball bearing)5* Strings(color by random)1* Instruction1* 3-finger Glove