Usage Tips:Features: and Sensory Enhancement Design: Mini finger skateboard toy accs, encourage and enhance children's senses, exercise their hand & brain coordination stimulate their basic hand & eyes abilities, stimulate them to DIY and modified of their finger toys. Qualification Material: Made of qualified alloy bearing, round and polished without burr, wear-resistant, non- metal to improve the play experience. Easy to Assemble: The finger skateboard part wheel set covers the accs you need, easy to assemble and change by yourself, extended the service life of your finger skateboard toy, universal size which is suitable for mostly finger skateboard toys. Durable Finger Skateboard Spare Parts: The durable deck wheel bracket are suitable for replacement of mini finger skateboard, extend the life, with good exercise & training for kids finger flexibility, unrestrained anywhere and bring fun indoor. Colour:silver Material:Zinc alloy Size:29mm Package Contents: 1 x small screwdriver(random colors, don't accept the specified color) 10 Set x Trucks (Included Screws, Wheel Nuts, Spacers) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.