EKU Collection Plastic Track Cleaning Tool for Sliding Door Tracks This tool is used for cleaning the track to maintain proper running for years to come. Maximum door weight 220 lbs. (100 kg) Hafele is committed to finding better ways and it shows in their innovative and beautiful line of door hardware products. These products will lead to better organization and the peace of mind that comes with Hafele brand products. In addition to quality and beauty, Hafele is committed to reducing their environmental impact, so you can buy these products with confidence in every aspect.