Features: High quality Sensory Enhancement Design: Mini finger skateboard accessories encourage and enhance children's senses, exercise hand and brain coordination, and stimulate hand-eye coordination abilities. Promotes creativity through DIY and customization of finger toys. Qualified Material: Made with quality alloy bearings, smoothly rounded and polished without burrs. Wear-resistant and non-toxic metal materials enhance the play experience. Easy to Assemble: Wheel set includes all necessary accessories for simple assembly and replacement. Universal size fits most mini finger skateboards, extending the product's service life. Durable Finger Skateboard Spare Parts: Durable wheel brackets designed for replacement on mini finger skateboards. Helps extend product life and supports finger dexterity development. Ideal for indoor play and skill training. Color: Silver Material: Zinc alloy Size: 29mm Package Contents: 1 x Small screwdriver (random color, no color choice available) 10 x Truck sets (includes screws, wheel nuts, and spacers) Package includes only the items listed above; other products not included. Note: Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3cm.