Crafted from stainless steel material, this accessory ensures durability and reliability even with extended use. The unique hook design simplifies installation, providing a secure and stable attachment that won't easily detach. The spring hanging piece allows for flexible adjustment of the roller blinds' lifting speed, catering to individual preferences. Its external sunshade function effectively blocks sunlight and heat, creating a cool and comfortable indoor environment. Compatible with various roller blinds, it optimal light-blocking and sunshade effects while enhancing privacy.Features-Color:Silver-Material:Stainless steel-Size:20.00X10.00X0.70cm/7.86X3.93X0.28in-Made of stainless steel material, this accessory for roller blinds is designed to provide durability and performance.-With its unique hook design, this accessory is easy to install and provides a secure and stable attachment, preventing detachment.-The versatile adjustment of roller blinds' lifting speed allows for control of light and privacy in any room.-This set includes spring clips, ensuring a perfect fit for your roller blinds.-Whether you're looking to block out the sun or add a touch of style to your windows, this accessory is the perfect choice for your roller blinds.Package list: 4 x roller shutter spring spare parts