Rubber dust covers. These covers protect unused connectors of mixers, amplifiers, etc. against:. Dust, dirt, moisture or wrong cabling. . NDM-1 = for XLR panel plugs. NDF-1 = for XLR panel jacks Description | dust cover | Nominal value | - | Type | - | Colour | black | Material | rubber | Suitable for | XLR panel plugs | Power supply | - | Dimensions | - | Length | - | Mounting dimensions | - | Weight | 1.4 g | Connections | - | Other features | - | Packing unit | 1 | |