Description Widely suitable for reversing railings, yard gates, sliding doors, rail doors, and similar applications. Easy to install and use, providing added convenience. Made from sturdy nylon materials that are wear-resistant. Features a stable and durable bolt design that ensures secure fixation and resists 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 for strength and long-lasting durability - Compact and Portable: Thoughtfully designed to help reduce vibration and enhance practicality - Practical and Versatile: Offers good flexibility, allowing smooth sliding and reliable performance - Creative Design: Suitable for use on sliding doors, rail doors, and various furniture applications; ideal for replacing old hardware components - Easy and Long-Lasting: Convenient and functional solution for replacement needs Package List 4 x Guiding Wheels