The sliding door pulley and umbrella parts in this kit are crafted from plastic and steel materials, offering durability and longevity. These components are compatible with a wide range of outdoor center pole umbrellas, making them a versatile choice for any patio setup. The ease of installation allows users to quickly replace broken parts, extending the life of their umbrellas. - Color: Multi - Material: Plastic, Steel - Size: 6.50 x 2.20 x 1.00 cm / 2.55 x 0.86 x 0.39 in - Durable materials: constructed from robust plastic and steel for long-lasting performance in various weather conditions - User-friendly design: designed for easy installation, enabling quick replacement of damaged components without professional assistance - Broad compatibility: fits a wide range of outdoor center pole umbrellas, ideal for use with patio setups - Cost-effective solution: replace individual parts instead of the entire umbrella to maintain your outdoor shade setup efficiently - Smooth operation: the pulley system ensures seamless opening and closing of the umbrella for convenient use Package list: 4 × patio umbrella pulley