Solberg clear poly carbonate moisture trap with stainless steel ball. The ball is machined for the seating surface to provide 98% sealing capacity. Rated for 40 CFM of flow. The moisture trap for sale is very similar to the one in the 1st picture, but is identical to the one in the 2nd picture. The one in the picture is the larger one. I purchased the wrong size moisture trap and so the new one is for sale. STS-100 model. for the specs: http://www.solbergmfg.com/ViewSeriesDetail.aspx?SeriesId=109&PartNumber=STS-100C&src=search