Description Features: Single-point contact structure, this structure greatly improves the signal when the signal through the connector, the connector itself produces a series of interference signals - magnetic loop current effect, and further improve the accuracy of the signal reduction. Overall length: 62 mm Maximum outer diameter: 17 mm Screw shaft length 16 mm Wire Hole Diameter: 5 mm Screw shaft diameter: 8 mm Suitable for mounting devices with 11 mm holes Colour: AS Shown Material: Metal Package Contents: 1 x Black & White Terminal Block 1 x Black & Red Terminal Block Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.