Features: 1. The spring terminal ensures a firm connection and makes the wire connection into one place. 2. It can ensure that your custom speakers or speaker upgrades and speaker cables are connected. 3. There are two mounting holes at both ends, which can quickly fix the 4-position speaker terminal block. specification: Rated load: AC 100V / 1.5A Color polarity coding: redlack Dimensions: length 64.5mm/2.53in, width 18mm/0.71in, screw hole diameter: 3.25mm/0.13in. Used for: connection clamps for speakers, speakers, test stands, etc.