The FRCOLOR Hair Dryer Nozzle Attachments are made of precision-engineered PC material, ensuring both durability and heat stability. These 12 pcs concentrated nozzles are designed for use with blow dryers, primarily suitable for individuals utilizing devices with a diameter of 4.35-4.5cm. The unique shape of the nozzles, specifically crafted to minimize hair impact, makes them an excellent choice for anyone seeking to reduce the rough, tangled strands often associated with conventional dryer tips. Furthermore, the PC material guarantees a cool touch, maintaining skin comfort even during extended use.