Complete set Includes 2 sets of 25 mm roller blind controllers, providing everything needed for a smooth installation in any environment. Easy installation All required accessories are included; quick setup with no need for extra tools or purchases. Bead chain included Comes with a 3meter bead chain, so you can operate your blinds immediately after unpacking. Durable construction Made from sturdy plastic materials for lasting performance and dependable operation. Specifications and compatibility Size: 25 mm Bead chain length: 3 meters Material: plastic Package includes: 2 sets of controllers and all required accessories Compatibility: designed for 25 mm roller blinds Use scenarios Home: worn or broken controllers in living rooms or bedrooms for smooth light control. Office: retrofit blinds in meeting rooms or workspaces for reliable, handson operation. DIY projects: upgrade or install blinds in rental properties or temporary setups without tools.