OCX-944 Dust Filter Kit This accessory is for customers using the F15-10 compressor unit, especially in environments with poor conditions such as dust. It is used to maintain the performance of the compressor. ◎ Included Items Intake port set Intake port joint Joint nut Filter layer Filter layer stay All accessories are included. Sales ended in March 2023. Due to shipping costs, it may be shipped without the box and wrapped in bubble wrap. Thank you for your understanding.