The popular LP record jacket cover has been made thicker, from 75μ to 100μ. Special processing has been done to eliminate the welding part (skirt) on the bottom of the cover, improving storage capacity. It can also store gatefold jackets, making it a recommended choice.
These are replacement grey TRIM knobs for channels 1-4 on Pioneer DJ's DJ mixers, the DJM-800, DJM-900NXS, and DJM-2000NXS. They make for a simple part replacement.