Material: Hard rubber Size: 1*1.3cm / 0.39"*0.51" Color: As shown 1. Transparent acrylic face design, beautiful and sturdy, allows for easy and clear inspection of equipment motion status, making use more convenient and secure. 2. Uses adhesive technology for installation, which is simple and very secure, convenient and fast. 3. Made of carefully selected high-quality materials, ensuring that this straight directional wheel can withstand high intensity pressure and traction. 4. Compact and flexible, convenient for carrying and use, suitable for various application scenarios, convenient and fast. 5. Perfect manufacturing processes and design ensure the high quality and long-term durability of the product, making it reliable and worry-free. Package includes: 1*Small directional pulleys.