General description The CSPARKV Sliding Door Roller Assembly is a complete kit designed for enhancing the efficiency of sliding doors and windows. It includes 4 rollers and 8 screws, ensuring a solid and practical solution for your home or office. Technical specifications Material: Premium stainless steel and copper Includes: 4 rollers and 8 screws Multiple Applications Suitable for most types of sliding doors and windows Improves security with reliable fittings Installation Remove damaged or missing wheel roller assemblies from patio glass sliding doors Install the new sliding door roller assembly easily Usage Enhances door efficiency Ensures stable performance for doors and windows