Description Widely suitable for reversing railings, yard gates, sliding doors, and rail doors. Easy to install and use, providing convenient functionality. Made of sturdy nylon materials that are wear-resistant. Features a stable and sturdy bolt for durable fixation that is not prone to loosening. Features - Color: Black - Material: Nylon - Size: 6.50 x 3.00 x 3.00 cm / 2.55 x 1.18 x 1.18 in - Fine Workmanship: Constructed from high-quality nylon material, strong and durable for long-term use - Compact and Portable: Thoughtful design helps reduce vibration, enhancing practicality - Practical and Versatile: Well-crafted for good flexibility, allowing smooth sliding and operation - Creative Design: Suitable for use on sliding doors, rail doors, and various furniture applications, ideal for replacing old components - Easy and Long-Lasting: Functional and reliable, serves as a suitable replacement part to meet everyday needs Package List 4 x Guiding Wheels